id:A115682 - OEIS Search Results

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Triangular numbers whose digit reversal is a pentagonal number (A000326).

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1, 10, 15, 21, 210, 62481, 67896, 557040, 2618616, 10095771, 10550121, 28883800, 62490610, 1524872700, 2708516800, 5491258003, 103352174628, 299536839001 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`62481=T(353) and 18426 is the 111st pentagonal number.`
	CROSSREFS	`Cf. A000326.` `Sequence in context: A075524 A048028 A048045 this_sequence A075523 A115679 A109373` `Adjacent sequences: A115679 A115680 A115681 this_sequence A115683 A115684 A115685`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research