A115695 - OEIS

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A115695

Powerful(1) numbers (A001694) whose digit reversal is a pentagonal number (A000326).

1, 100, 500, 529, 1000, 1089, 2116, 5000, 6241, 10000, 50000, 52900, 100000, 103041, 108900, 151875, 211600, 500000, 529000, 549152, 624100, 1000000, 1089000, 2116000, 5000000, 5290000, 6241000, 10000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Index entries for sequences related to powerful numbers`
	EXAMPLE	`529=23^2 is powerful and 925 is the 25th pentagonal number.`
	CROSSREFS	`Cf. A000326, A001694, A115696.` `Sequence in context: A017642 A093004 A003588 * A172518 A174073 A030024` `Adjacent sequences: A115692 A115693 A115694 * A115696 A115697 A115698`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006`

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.