Main diagonal of symmetric triangle A126150: a(n) = A126150(n,n).
A126152
Main diagonal of symmetric triangle A126150: a(n) = A126150(n,n).
Terms
- a(0) =1a(1) =4a(2) =36a(3) =744a(4) =28536a(5) =1736064a(6) =152914176a(7) =18372559104
External references
- oeis: A126152