29882
domain: N
Appears in sequences
- Numbers k such that k!!!!!! - 1 is prime.at n=20A051592
- Numbers k such that k and k^2 use only the digits 2, 3, 4, 8 and 9.at n=17A137077
- Number of (n+1) X 3 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock differing from the number in all its horizontal and vertical neighbors.at n=14A205066
- Number of compositions of n whose non-adjacent parts are strictly decreasing.at n=41A333193
- G.f. A(x) satisfies: 1 - x = Sum_{n>=0} (x^(5*n) + (-1)^n*A(x))^n.at n=28A352821