A094957 Antidiagonal sums of array A094954.
1, 2, 4, 10, 30, 101, 370, 1459, 6161, 27741, 132621, 670444, 3571013, 19975956, 117026702, 716199026, 4568532550, 30313253547, 208834580360, 1491280419431, 11021454603693, 84184429969735, 663707628683503
Offset: 1