id:A124809 - OEIS Search Results

Search: id:A124809

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Numbers of the form (square + 1) that are not square-free.

+0
5

50, 325, 1025, 1445, 1682, 1850, 3250, 4625, 4901, 6725, 8650, 9802, 11450, 13690, 13925, 17425, 20450, 24650, 28225, 33125, 37250, 42850, 47525, 53825, 57122, 59050, 63002, 66050, 71825, 79525, 85850, 94250, 101125, 106930, 110225, 117650 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = A049532(n)^2 + 1.`
	CROSSREFS	`Cf. A002522, A013929, A069987.` `Sequence in context: A091883 A091414 A046656 this_sequence A031420 A111341 A019561` `Adjacent sequences: A124806 A124807 A124808 this_sequence A124810 A124811 A124812`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 08 2006`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

AT&T Labs Research