25149

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=4, I={0,2}.at n=35A079974
• Numbers k such that 8*10^k + 7*R_k - 4 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=9A103090
• Expansion of 1/(1 - x - x^2 + x^3 - x^4 + x^6).at n=31A193146
• Maximal sum of x0 + x0*x1 + ... + x0*x1*...*xk over all compositions x0 + ... + xk = n.at n=26A239288
• Numbers m such that A166133(m+1) = A166133(m)^2 - 1.at n=36A256703
• Numbers k such that (229*10^k - 1)/3 is prime.at n=22A280272
• Number of pairs of antipodal vertices in the level n Hanoi graph.at n=7A375256
• Total number of runs of 1's in all length n binary words in which 1's occur in runs of at least 3.at n=19A387573
• Number of achiral polyominoes in {4,5} tessellation of the hyperbolic plane.at n=15A390193