9845550

Appears in sequences

• Number of totally isotropic spaces of index n in orthogonal geometry of dimension 2n.at n=7A028361
• Total number of doubly-even self-dual binary codes of length 8n.at n=2A028363
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = 2^n x and t(x) = x+1. See Comments.at n=34A375044
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = 2^n and t(x) = 2x+1. See Comments.at n=27A375045