id:A115695 - OEIS Search Results

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

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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; listen)

	OFFSET	`1,2`
	EXAMPLE	`529=23^2 is powerful and 925 is the 25th pentagonal number.`
	CROSSREFS	`Cf. A000326, A001694, A115696.` `Sequence in context: A017642 A093004 A003588 this_sequence A030024 A068086 A115691` `Adjacent sequences: A115692 A115693 A115694 this_sequence A115696 A115697 A115698`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

AT&T Labs Research