A119076 Numbers k such that the k-th triangular number contains only digits {0,4,8}.

12655, 94319, 1268735, 2982752019194624, 9466159183199999, 12712265013320013388655

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Giovanni Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119075. See A119034 for a table of cross-references.

Sequence in context: A237388 A185529 A078957 * A251099 A252351 A251478

Adjacent sequences: A119073 A119074 A119075 * A119077 A119078 A119079

Keyword

nonn,base,more

Author

Giovanni Resta, May 10 2006

Extensions

a(6) from Bert Dobbelaere, Mar 14 2026

Status

approved