id:A008333 - OEIS Search Results

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Sum of divisors of p+1, p prime.

+0
7

4, 7, 12, 15, 28, 24, 39, 42, 60, 72, 63, 60, 96, 84, 124, 120, 168, 96, 126, 195, 114, 186, 224, 234, 171, 216, 210, 280, 216, 240, 255, 336, 288, 336, 372, 300, 240, 294, 480, 360, 546, 336, 508, 294, 468, 465, 378, 504, 560, 432, 546, 744, 399, 728, 528, 720, 720, 558 (list; graph; listen)

	OFFSET	`2,1`
	MAPLE	`for i from 1 to 500 do if isprime(i) then print(sigma(i+1)); fi; od;`
	MATHEMATICA	`lst={}; Do[AppendTo[lst, DivisorSigma[1, Prime[n]+1]], {n, 6!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 20 2008]`
	CROSSREFS	`Sequence in context: A061503 A134659 A075624 this_sequence A076295 A083030 A005005` `Adjacent sequences: A008330 A008331 A008332 this_sequence A008334 A008335 A008336`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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