A diagonal of rectangular table A208896: a(n) = A208896(n+2,n).
A208898
A diagonal of rectangular table A208896: a(n) = A208896(n+2,n).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =9a(4) =72a(5) =880a(6) =14946a(7) =331177a(8) =9157984a(9) =305879724a(10) =12036430600a(11) =547226046939
External references
- oeis: A208898