73891domain: NAppears in sequences(8*n^3 + 3*n^2 + n) / 6.at n=37A219054Number of (2+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=13A250814Numbers k such that (13*10^k - 43)/3 is prime.at n=23A290962