53901domain: NAppears in sequencesa(n) = 44*n^2 + 1.at n=35A158630Number of (w,x,y) with all terms in {0,...,n} and 2|w-x| >= max(w,x,y)-min(w,x,y).at n=42A213388a(n) = (n + 1)*(2*n + 1)*(4*n + 9)/3.at n=26A269342The Riordan square of the Euler numbers. Triangle T(n, k), 0 <= k <= n, read by rows.at n=16A321630