Number of ordered ways of writing n-th triangular number as a sum of n nonzero triangular numbers.
A298858
Number of ordered ways of writing n-th triangular number as a sum of n nonzero triangular numbers.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =0a(4) =4a(5) =11a(6) =86a(7) =777a(8) =4670a(9) =36075a(10) =279482a(11) =2345201a(12) =21247326a(13) =197065752a(14) =1983741228a(15) =20769081251a(16) =228078253168
External references
- oeis: A298858