id:A115691 - OEIS Search Results

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

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1, 100, 1000, 5400, 10000, 54000, 100000, 540000, 1000000, 1306449, 1728243, 5400000, 10000000 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`5400=2^33^35^2 is powerful and 45=T(9).`
	CROSSREFS	`Cf. A001694, A115692.` `Sequence in context: A115695 A030024 A068086 this_sequence A066432 A136387 A001737` `Adjacent sequences: A115688 A115689 A115690 this_sequence A115692 A115693 A115694`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.