A119126 Numbers k such that the k-th triangular number contains only digits {1,4,6}.

1, 3, 11, 36, 113, 288, 541, 963, 1711, 2868, 5313, 36458, 48258, 182463, 288588, 363633, 536956, 568588, 1711411, 2988113, 9425088, 11055868, 30533313, 47257686, 48200963, 963446588, 1527359886, 1825604911, 363633363333

Offset

1,2

Links

Table of n, a(n) for n=1..29.

G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119125. See A119034 for a table of cross-references.

Sequence in context: A119177 A213679 A297577 * A119088 A296391 A305132

Adjacent sequences: A119123 A119124 A119125 * A119127 A119128 A119129

Keyword

nonn,base

Author

Giovanni Resta, May 10 2006

Status

approved