Number of ordered ways of writing n as a sum of n tetrahedral numbers.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =21a(6) =61a(7) =141a(8) =309a(9) =757a(10) =2111a(11) =6051a(12) =16721a(13) =44617a(14) =118301a(15) =318501a(16) =871781a(17) =2400741a(18) =6596953a(19) =18067329a(20) =49460555a(21) =135697395a(22) =373271515a(23) =1028451579a(24) =2835353337a(25) =7819016521a(26) =21572619771a(27) =59562583471a(28) =164586609409a(29) =455114644297