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A119163 Numbers n such that the n-th triangular number contains only digits {2,4,8}. +0
3
7, 312, 1287, 1297912, 7054712, 7521287, 2384302087 (list; graph; listen)
OFFSET

1,1

COMMENT

Next entry must be greater than 1.4*10^16.

LINKS

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119162. See A119034 for a table of cross-references.

Sequence in context: A015005 A002437 A086215 this_sequence A082160 A163437 A109059

Adjacent sequences: A119160 A119161 A119162 this_sequence A119164 A119165 A119166

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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