Number of weak inversions in all standard Young tableaux of size n.

A225618

Number of weak inversions in all standard Young tableaux of size n.

Terms

    a(0) =0a(1) =1a(2) =6a(3) =29a(4) =125a(5) =538a(6) =2282a(7) =9916a(8) =43416a(9) =195206a(10) =891638a(11) =4176002a(12) =19920914a(13) =97248184a(14) =483752596a(15) =2458123328a(16) =12722535412a(17) =67155870194a(18) =360792258750

External references