Row sums of triangle A104988, which equals the matrix square of triangle A104980.
A104989
Row sums of triangle A104988, which equals the matrix square of triangle A104980.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =69a(4) =433a(5) =3133a(6) =25657a(7) =234537a(8) =2367825a(9) =26176981a(10) =314670353a(11) =4088360569a(12) =57112939433a(13) =853922061413
External references
- oeis: A104989