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A119072 Numbers k such that the k-th triangular number contains only digits {0,4,5}. 2
9, 10, 89, 100, 899, 900, 1000, 8989, 9000, 10000, 30134, 31624, 90000, 95289, 100000, 900000, 953944, 1000000, 9000000, 10000000, 10044944, 32880100, 90000000, 100000000, 900000000, 1000000000, 3328800100, 9000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119071. See A119034 for a table of cross-references.

Sequence in context: A249311 A041039 A041176 * A347183 A136867 A136879

Adjacent sequences:  A119069 A119070 A119071 * A119073 A119074 A119075

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved

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Last modified May 25 02:55 EDT 2022. Contains 354047 sequences. (Running on oeis4.)