id:A115745 - OEIS Search Results

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Pentagonal numbers (A000326) that are the product of 2 palindromes greater than 1.

+0
3

12, 22, 35, 176, 330, 2380, 2625, 2882, 3432, 3876, 4845, 8855, 9801, 12650, 14652, 15251, 21901, 26070, 52360, 61105, 66045, 84847, 111657, 137562, 156332, 197472, 230300, 254410, 260625, 270725, 287547, 295482, 351142, 359905 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`66045 is the 210-th pentagonal number and 66045=111*595.`
	CROSSREFS	`Cf. A000326, A115683, A115743, A115744.` `Sequence in context: A078538 A098955 A124885 this_sequence A129639 A153361 A115709` `Adjacent sequences: A115742 A115743 A115744 this_sequence A115746 A115747 A115748`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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