19876

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 76 ones.at n=33A031844
• Numbers n such that x^n + x^13 + 1 is irreducible over GF(2).at n=19A057483
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, 1), (0, 1), (1, -1), (1, 1)}.at n=8A151294
• Numbers k such that (2^64 - 189)*10^k + 1 is prime.at n=9A209250
• Number of (n+1)X(4+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=0A250703
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=6A250707
• Number of (1+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=3A250708
• Numbers k such that 4*k + 3 is a perfect cube, sorted by absolute values.at n=21A305291
• a(0) = 1, a(n) = Sum_{k=1..n} stirling2(n,k) * k^(3*k).at n=3A308491
• Numbers k such that sigma(k)! - 1 is prime, where sigma is A000203.at n=21A309548
• Row sums of A321623.at n=6A321574
• Index of first occurrence of n in A364197.at n=44A364198
• Number of regions formed after n points have been placed in general position on each edge of a triangle (as in A365929).at n=10A367015