Number of ordered ways of writing n as the sum of 3 triangular numbers.

Terms

a(0) =1a(1) =3a(2) =3a(3) =4a(4) =6a(5) =3a(6) =6a(7) =9a(8) =3a(9) =7a(10) =9a(11) =6a(12) =9a(13) =9a(14) =6a(15) =6a(16) =15a(17) =9a(18) =7a(19) =12a(20) =3a(21) =15a(22) =15a(23) =6a(24) =12a(25) =12a(26) =9a(27) =12a(28) =15a(29) =6