Number of ordered ways of writing n-th triangular number as a sum of n squares of nonnegative integers.
A299031
Number of ordered ways of writing n-th triangular number as a sum of n squares of nonnegative integers.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =3a(4) =18a(5) =60a(6) =252a(7) =1576a(8) =10494a(9) =64152a(10) =458400a(11) =3407019a(12) =27713928a(13) =225193982a(14) =1980444648a(15) =17626414158a(16) =165796077562
External references
- oeis: A299031