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Search: id:A119210
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A119210 Triangular numbers composed of digits {4,6,7}. +0
3
6, 66, 666, 476776, 764466, 4646676, 464774774646, 667474767766464747666467446, 7666777767444444644744476476, 44774674766666676747766477446 (list; graph; listen)
OFFSET

1,1
COMMENT

Next entry must be greater than 10^32.

LINKS

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A053957, A119211. See A119033 for a table of cross-references.

Sequence in context: A036523 A112902 A119160 this_sequence A119234 A119232 A131519

Adjacent sequences: A119207 A119208 A119209 this_sequence A119211 A119212 A119213

KEYWORD

nonn,base,more

AUTHOR

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

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

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