Numbers k such that the k-th triangular number contains only digits {0,1,6}.
A119042
Numbers k such that the k-th triangular number contains only digits {0,1,6}.
Terms
- a(0) =1a(1) =3a(2) =4a(3) =11a(4) =36a(5) =141a(6) =179a(7) =363a(8) =1095a(9) =3633a(10) =4473a(11) =4704a(12) =36333a(13) =44758a(14) =46079a(15) =46904a(16) =57620a(17) =1414920a(18) =1460141a(19) =4474371a(20) =14560288a(21) =348310541
External references
- oeis: A119042