24595

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 3421, 4312.at n=34A116756
• G.f. satisfies: A(x) = 1 + x*A(x)^3 + x^2*A(x)^4.at n=7A186997
• Numbers k such that (302*10^k + 13)/9 is prime.at n=20A281144
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0^n and T(n,k) = k * Sum_{r=0..n} binomial(n+2*r+k,r) * binomial(r,n-r)/(n+2*r+k) for k > 0.at n=43A378290