Number of sets of nonzero triangular numbers whose largest element is the n-th triangular number and whose sum is a triangular number.

A378961

Number of sets of nonzero triangular numbers whose largest element is the n-th triangular number and whose sum is a triangular number.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =5a(6) =5a(7) =11a(8) =19a(9) =33a(10) =55a(11) =92a(12) =192a(13) =327a(14) =579a(15) =1142a(16) =2052a(17) =3776a(18) =6936a(19) =12964a(20) =24308a(21) =44432a(22) =84763a(23) =159299a(24) =299093a(25) =567295a(26) =1075570a(27) =2045580a(28) =3883453a(29) =7411014

External references