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A119172 Triangular numbers composed of digits {2,6,7}. 2
6, 66, 276, 666, 7626, 6666726, 77666666626, 2662627722726, 2777672627676766, 77772662277672726, 6622726277766676626, 672667762262676277666726 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Next entry must be greater than 10^37.

LINKS

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A058462, A119173. See A119033 for a table of cross-references.

Sequence in context: A133424 A045641 A071276 * A064167 A175455 A185253

Adjacent sequences:  A119169 A119170 A119171 * A119173 A119174 A119175

KEYWORD

nonn,base,more

AUTHOR

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

EXTENSIONS

New lower bound for further terms from Max Alekseyev (maxale(AT)gmail.com), May 07 2009

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.