Denominators of T(n+1)/n! reduced to lowest terms, where T(n) are the triangular numbers A000217.
A110561
Denominators of T(n+1)/n! reduced to lowest terms, where T(n) are the triangular numbers A000217.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =8a(5) =40a(6) =180a(7) =140a(8) =896a(9) =72576a(10) =604800a(11) =6652800a(12) =68428800a(13) =59304960a(14) =726485760a(15) =163459296000
External references
- oeis: A110561