Sequences

Strong pseudoprimes to base 85.

Strong pseudoprimes to base 86.

Strong pseudoprimes to base 87.

Strong pseudoprimes to base 88.

Strong pseudoprimes to base 89.

Strong pseudoprimes to base 90.

Strong pseudoprimes to base 91.

Strong pseudoprimes to base 92.

Strong pseudoprimes to base 93.

Strong pseudoprimes to base 94.

Strong pseudoprimes to base 95.

Strong pseudoprimes to base 96.

Strong pseudoprimes to base 97.

Strong pseudoprimes to base 98.

Strong pseudoprimes to base 99.

Strong pseudoprimes to base 100.

Number of partitions of 1/n into 4 reciprocals of positive integers.

Number of partitions of 1/n into 5 reciprocals of positive integers.

Consider integers z such that C(z,4) = C(x,4) + C(y,4), x >= y >= 4, is solvable. Sequence gives values of z.

Numbers whose base-2 representation is the juxtaposition of two identical strings.

Numbers whose base-3 representation is the juxtaposition of two identical strings.

Numbers whose base-4 representation is the juxtaposition of two identical strings.

Numbers whose base-5 representation is the juxtaposition of two identical strings.

Numbers whose base-6 representation is the juxtaposition of two identical strings.

Numbers whose base-7 representation is the juxtaposition of two identical strings.

Numbers whose base-8 representation is the juxtaposition of two identical strings.

Numbers whose base-9 representation is the juxtaposition of two identical strings.

Doublets: base-10 representation is the juxtaposition of two identical strings.

a(n)^2 is the least square base-n doublet (base-n representation is the concatenation of 2 identical strings).

Least square base n doublet (written in base 10).

Expansion of 1/((1-5x)(1-7x)(1-12x)).

Vampire numbers: (definition 1): n has a nontrivial factorization using n's digits.

Expansion of 1/((1-5x)(1-8x)(1-9x)).

Fibonacci(a(n)) is the least Fibonacci number beginning with n.

Smallest Fibonacci number beginning with n.

Expansion of 1/((1-5x)(1-8x)(1-10x)).

Numbers k such that the continued fraction for sqrt(k) has period 6.

Numbers k such that the continued fraction for sqrt(k) has period 8.

Numbers k such that the continued fraction for sqrt(k) has period 10.

Numbers k such that the continued fraction for sqrt(k) has period 11.

Numbers k such that the continued fraction for sqrt(k) has period 12.

Numbers k such that the continued fraction for sqrt(k) has period 13.

Numbers k such that the continued fraction for sqrt(k) has period 14.

Numbers k such that the continued fraction for sqrt(k) has period 15.

Numbers k such that the continued fraction for sqrt(k) has period 16.

Numbers k such that the continued fraction for sqrt(k) has period 17.

Numbers k such that the continued fraction for sqrt(k) has period 18.

Numbers k such that the continued fraction for sqrt(k) has period 19.

Numbers k such that the continued fraction for sqrt(k) has period 20.

Numbers k such that the continued fraction for sqrt(k) has period 21.