Numbers k such that the k-th triangular number contains only digits {0,2,7}.
A218398
Numbers k such that the k-th triangular number contains only digits {0,2,7}.
Terms
- a(0) =374184a(1) =7385400
External references
- oeis: A218398
A218398
Numbers k such that the k-th triangular number contains only digits {0,2,7}.