Row sums of triangle A144280 (called S2hat(-3)).
A144281
Row sums of triangle A144280 (called S2hat(-3)).
Terms
- a(0) =1a(1) =4a(2) =25a(3) =265a(4) =3793a(5) =70789a(6) =1600429a(7) =42811078a(8) =1316981794a(9) =45858363502
External references
- oeis: A144281