Numbers k such that the k-th triangular number contains only digits {2,3,6}.
A119155
Numbers k such that the k-th triangular number contains only digits {2,3,6}.
Terms
- a(0) =2a(1) =3a(2) =8a(3) =11a(4) =36a(5) =211a(6) =816a(7) =6816a(8) =25948a(9) =66816a(10) =80791a(11) =111948a(12) =724323a(13) =730251a(14) =2127563a(15) =8511948a(16) =364234436a(17) =80456475963a(18) =81513466816
External references
- oeis: A119155