Row sums of triangle A144285 (called S2hat(-4)).
A144286
Row sums of triangle A144285 (called S2hat(-4)).
Terms
- a(0) =1a(1) =5a(2) =41a(3) =561a(4) =10281a(5) =243481a(6) =6965401a(7) =235103417a(8) =9112789817a(9) =399330154617
External references
- oeis: A144286