Triangular numbers whose digits can be rearranged to form a substring of 123456789012345678901234....

A068804

Triangular numbers whose digits can be rearranged to form a substring of 123456789012345678901234....

Terms

    a(0) =0a(1) =1a(2) =3a(3) =6a(4) =10a(5) =21a(6) =45a(7) =78a(8) =120a(9) =190a(10) =210a(11) =231a(12) =435a(13) =465a(14) =9180a(15) =9870a(16) =12403a(17) =24310a(18) =24531a(19) =47586a(20) =109278a(21) =231540a(22) =235641a(23) =246753a(24) =327645a(25) =541320a(26) =542361a(27) =921403a(28) =1053426a(29) =1345620

External references