18825

Appears in sequences

• a(n) = T(n,2n-6), T given by A027023.at n=9A027030
• Arithmetic mean of two consecutive prime interprimes of second order: interprimes of third order.at n=6A126556
• Triangle read by rows: coefficients of a Bessel polynomial recursion: P(x, n) = 2*(n-1)*P(x, n - 1)/x - n*P(x, n - 2) with substitution x -> 1/y.at n=46A136668
• Numbers of the form 56+p^2 (where p is a prime).at n=32A138690
• Triangle T(n,k) represents the coefficients of (x^15*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.at n=18A223517
• Number of n-length words on {0,1,2,3,4,5} in which 0 appears only in runs of length 2.at n=6A255118
• For increasing z > 0, integers, y - x, where x^3 + y^3 = z^3 + 1, with y > x > 1.at n=21A259753
• Molien series for invariants of finite Coxeter group A_10.at n=56A266779
• Integers k equal to the sum over A000203(t) mod t, for some steps, starting with t = k and then using the result to feed the next calculation.at n=34A377001
• Number of integer partitions of n with origin-to-boundary graph-distance equal to 4.at n=61A384562