Triangular numbers whose sum of digits is 9.

Terms

a(0) =36a(1) =45a(2) =153a(3) =171a(4) =351a(5) =630a(6) =1035a(7) =1431a(8) =2016a(9) =3240a(10) =3321a(11) =4005a(12) =8001a(13) =10440a(14) =13041a(15) =13203a(16) =16110a(17) =21321a(18) =23220a(19) =25200a(20) =101025a(21) =105111a(22) =114003a(23) =222111a(24) =320400a(25) =321201a(26) =1010331a(27) =1241100a(28) =1313010a(29) =1400301