id:A114069 - OEIS Search Results

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sigma(n) + n is a square.

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33, 90, 385, 420, 649, 900, 1441, 1464, 1480, 1729, 2025, 2616, 3168, 3588, 3984, 4005, 4873, 5049, 5185, 6225, 7153, 7585, 8740, 9060, 10285, 11080, 12280, 12609, 13914, 14809, 15136, 16065, 16345, 17017, 17353, 17809, 18073, 18625, 19098 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`sigma(33) + 33 = 81 = 9^2.`
	CROSSREFS	`Sequence in context: A080200 A067705 A075213 this_sequence A098938 A098923 A044220` `Adjacent sequences: A114066 A114067 A114068 this_sequence A114070 A114071 A114072`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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