id:A133051 - OEIS Search Results

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Squares of perfect numbers.

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36, 784, 246016, 66064384, 1125625045712896, 73785850399226331136, 18889393873953262403584, 5316911978187903335626628646131728384, 7067388259113537312203207839508118631205775474686154970915275376716414976 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = A000396(n)^2`
	EXAMPLE	`a(2)=784 because the second perfect number is 28 and 28^2=784.`
	CROSSREFS	`Cf. A000290, A001248. Perfect numbers: A000396.` `Sequence in context: A004338 A014772 A110206 this_sequence A028222 A028216 A028221` `Adjacent sequences: A133048 A133049 A133050 this_sequence A133052 A133053 A133054`
	KEYWORD	`nonn`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Oct 30 2007`
	EXTENSIONS	`More terms from Olaf Voss (richyfourtythree(AT)yahoo.com), Feb 13 2008`

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

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