Sequences

Numbers whose base-4 representation has the same number of 0's as 3's.

Numbers whose base-4 representation has one more 0 than 3's.

Numbers whose base-4 representation has 2 more 0's than 3's.

Numbers whose base-4 representation has 3 more 0's than 3's.

Numbers whose base-4 representation has 4 more 0's than 3's.

Numbers whose base-4 representation has one fewer 0 than 3's.

Numbers whose base-4 representation has 2 fewer 0's than 3's.

Numbers whose base-4 representation has 3 fewer 0's than 3's.

Numbers whose base-4 representation has 4 fewer 0's than 3's.

Numbers whose base-5 representation has the same number of 0's as 4's.

Numbers whose base-5 representation has one more 0 than 4's.

Numbers whose base-5 representation has 2 more 0's than 4's.

Numbers whose base-5 representation has 3 more 0's than 4's.

Numbers whose base-5 representation has one fewer 0 than 4's.

Numbers whose base-5 representation has 2 fewer 0's than 4's.

Numbers whose base-5 representation has 3 fewer 0's than 4's.

Numbers whose base-6 representation has the same number of 0's as 5's.

Numbers whose base-6 representation has one more 0 than 5's.

Numbers whose base-6 representation has 2 more 0's than 5's.

Numbers whose base-6 representation has one fewer 0 than 5's.

Numbers whose base-6 representation has 2 fewer 0's than 5's.

Numbers whose base-7 representation has the same number of 0's as 6's.

Numbers whose base-7 representation has one more 0 than 6's.

Numbers whose base-7 representation has 2 more 0's than 6's.

Numbers whose base-7 representation has one fewer 0 than 6's.

Numbers whose base-7 representation has 2 fewer 0's than 6's.

Numbers whose base-8 representation has the same number of 0's as 7's.

Numbers whose base-8 representation has one more 0 than 7's.

Numbers whose base-8 representation has 2 more 0's than 7's.

Numbers whose base-8 representation has one fewer 0 than 7's.

Numbers whose base-8 representation has 2 fewer 0's than 7's.

Numbers whose base-9 representation has the same number of 0's as 8's.

Numbers whose base-9 representation has one more 0 than 8's.

Numbers whose base-9 representation has 2 more 0's than 8's.

Numbers whose base-9 representation has one fewer 0 than 8's.

Numbers whose base-9 representation has 2 fewer 0's than 8's.

Numbers whose base-10 representation has one more 0 than 9's.

Numbers whose base-10 representation has 2 more 0's than 9's.

Numbers whose base-10 representation has one fewer 0 than 9's.

Numbers whose base-10 representation has 2 fewer 0's than 9's.

Triangle of numbers maxfit[ i ][ j ] = upper bound on number of incidences in a geometry with <= i points and <= j blocks.

Size of lexicographic code of length n, Hamming distance 10 and weight 10.

Size of lexicographic code of length n, Hamming distance 12 and weight 12.

Size of lexicographic code of length n, Hamming distance 6 and weight 6.

Upper prime of a difference of 4 between consecutive primes.

Number of consecutive integers placed in n bins under a certain packing scheme.

a(n) = smallest k>0 such that the elliptic curve y^2 = x^3 + k has rank n, or -1 if no such k exists.

a(n) = smallest k > 0 such that the elliptic curve y^2 = x^3 - k has rank n, or -1 if no such k exists.

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 11.

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 12.