A119203 Numbers k such that the k-th triangular number contains only digits {4,5,6}.

3, 9, 10, 11, 30, 36, 94, 96, 105, 114, 305, 1043, 2988, 3303, 3363, 11363, 3021769, 3054388, 10627009, 33330030, 33330036, 33336636, 94302243, 115470036, 305177471, 336352955885, 330353339515569, 955663806624114

Offset

1,1

Links

Table of n, a(n) for n=1..28.

G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119202. See A119034 for a table of cross-references.

Sequence in context: A308421 A309349 A024574 * A115403 A282409 A059012

Adjacent sequences: A119200 A119201 A119202 * A119204 A119205 A119206

Keyword

nonn,base

Author

Giovanni Resta, May 10 2006

Status

approved