48304

Appears in sequences

• Row sums of Riordan array A110165.at n=7A110166
• Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 5 ones in any 3 X 3 X 3 subtriangle.at n=7A153939
• Number of length n+7 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=11A256822
• Numbers k such that (68*10^k - 257)/9 is prime.at n=23A288149
• G.f. satisfies A(x) = exp( 2 * Sum_{k>=1} A(-x^k) * x^k/k ).at n=12A363470
• a(n) is the n-th number which can be represented as the sum of n distinct n-almost primes in exactly n ways, or -1 if fewer than n such numbers exist.at n=9A384842