5406720domain: NAppears in sequences5-fold convolution of A000302 (powers of 4); expansion of 1/(1-4*x)^5.at n=7A040075Inverse binomial transform of n^2*3^(n-1).at n=15A084857Period of the first difference of Ulam 1-additive sequence U(2,2n+1).at n=12A100729