51470

Appears in sequences

• Number of parts in all partitions of all the numbers in {1,2,...,n} into distinct parts.at n=41A015724
• Numbers n such that 281*2^n-1 is prime.at n=10A050899
• Triangle T(n,k) read by rows: Number of non-equivalent ways (mod D_3) to choose k points from an nXnXn triangular grid so that no three of them form a 2X2X2 subtriangle.at n=43A234247
• Number of iterations of z -> z^2 + 1/4 + 1/2^n until z > 2, starting with z = 0.at n=28A332062