A119062 Numbers k such that the k-th triangular number contains only digits {0,3,5}.

2, 10, 24, 77, 100, 1000, 10000, 100000, 257100, 1000000, 2647829, 10000000, 10349399, 26657100, 100000000, 316340024, 775313489, 1000000000, 10000000000, 100000000000, 1000000000000, 1003347948924, 8403017712114

Offset

1,1

Links

Table of n, a(n) for n=1..23.

G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119061. See A119034 for a table of cross-references.

Sequence in context: A120550 A233266 A222848 * A270822 A248117 A345695

Adjacent sequences: A119059 A119060 A119061 * A119063 A119064 A119065

Keyword

nonn,base

Author

Giovanni Resta, May 10 2006

Status

approved