3510000domain: NAppears in sequencesa(n) = 25^(n+1)*Gamma(n+8/5)/Gamma(3/5).at n=3A276489Numbers k such that sum of digits (k) and sum of digits (k^2) is 9.at n=21A325450Table T(n,k) read by upward antidiagonals. T(n,k) = Product_{i=1..n} Sum_{j=1..k} (i-1)*k+j.at n=32A333445