id:A102360 - OEIS Search Results

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Sigma((7^n - 1)/6), where sigma(n) is the sum of positive divisors of n.

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1, 15, 80, 961, 2802, 52800, 142020, 2347506, 10512320, 96837120, 329849040, 8619170560, 16148168402, 221483030400, 1146781040640, 14442767744328, 38774519976900, 813898294809600, 1904350030969680, 35410174950039552 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A023000.` `Adjacent sequences: A102357 A102358 A102359 this_sequence A102361 A102362 A102363` `Sequence in context: A024002 A050149 A055815 this_sequence A060581 A065103 A108674`
	KEYWORD	`nonn`
	AUTHOR	`Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Feb 22 2005`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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