Number of ordered ways of writing n-th triangular number as a sum of n squares.
A319221
Number of ordered ways of writing n-th triangular number as a sum of n squares.
Terms
- a(0) =1a(1) =2a(2) =0a(3) =24a(4) =144a(5) =960a(6) =4608a(7) =74048a(8) =859952a(9) =9568800a(10) =109975680a(11) =1647979872a(12) =23917274304a(13) =358378620704
External references
- oeis: A319221