Numbers k such that the k-th triangular number contains only digits {1,3,4}.

A119112

Numbers k such that the k-th triangular number contains only digits {1,3,4}.

Terms

    a(0) =1a(1) =2a(2) =53a(3) =258a(4) =25746a(5) =53746a(6) =161946a(7) =7930238a(8) =14927378a(9) =29810546a(10) =4714751561a(11) =25742623453

External references