Numbers k such that the k-th triangular number contains only digits {0,1,4}.
A119038
Numbers k such that the k-th triangular number contains only digits {0,1,4}.
Terms
- a(0) =1a(1) =4a(2) =141a(3) =144a(4) =286a(5) =9055a(6) =16795a(7) =44944a(8) =90598a(9) =167579a(10) =15100424a(11) =29678424a(12) =45637726a(13) =283245880a(14) =5291767266
External references
- oeis: A119038