A119185 Numbers k such that the k-th triangular number contains only digits {3,4,6}.

2, 3, 8, 11, 36, 816, 85611, 364243, 81775868, 817858956, 832639591, 85374871556, 94304439591, 1152678139331, 29551086049868, 112573208752763, 855959656346411, 966058450039783, 1151819988918983

Offset

1,1

Comments

Next term exceeds 1.4*10^16.

Links

Table of n, a(n) for n=1..19.

G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119184. See A119034 for a table of cross-references.

Sequence in context: A119195 A119199 A119197 * A056922 A101579 A041711

Adjacent sequences: A119182 A119183 A119184 * A119186 A119187 A119188

Keyword

nonn,base,more

Author

Giovanni Resta, May 10 2006

Status

approved