24124

Appears in sequences

• G.f. satisfies: A(x) = x + A( A(x)^2 + A(x)^3 ).at n=8A155134
• Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 1 1 vertically.at n=9A209221
• Number of hybrid 4-ary trees with n internal nodes.at n=5A239107
• Number A(n,k) of hybrid k-ary trees with n internal nodes; square array A(n,k), n>=0, k>=1, read by antidiagonals.at n=41A245049
• Number of self-avoiding walks on a 2-dimensional square lattice where the walk consists of steps with incrementing lengths equal to the prime numbers, from 2 to prime(n).at n=9A336262
• a(n) is the smallest b >= 2 such that 1 + Sum_{k=0..n} b^(2^k) is prime, or 1 if no such b exists.at n=12A352736
• Concatenations x||1||x for numbers x.at n=23A392225