Row sums of triangle A144275 (called S2hat(-2)).
A144276
Row sums of triangle A144275 (called S2hat(-2)).
Terms
- a(0) =1a(1) =3a(2) =13a(3) =97a(4) =997a(5) =13585a(6) =225625a(7) =4454801a(8) =101415881a(9) =2618639033a(10) =75524367593
External references
- oeis: A144276