A141012 - OEIS

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A141012

E.g.f. sum_{d|M} (exp(d*x)-1)/d, M=13.

0, 2, 14, 170, 2198, 28562, 371294, 4826810, 62748518, 815730722, 10604499374, 137858491850, 1792160394038, 23298085122482, 302875106592254, 3937376385699290, 51185893014090758 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..1000`
	FORMULA	`a(n) = sum_{d\|13} d^(n-1) = 1+13^(n-1) = 1+A001022(n-1), n>0. a(n) = 14a(n-1) -13a(n-2), n>2. G.f.: -2x(-1+7x)/((13x-1)(x-1)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 05 2010]` `a(n) = 13a(n-1)-12, n>1. - Vincenzo Librandi, Sep 17 2011`
	CROSSREFS	`Sequence in context: A047055 A188194 A046247 * A167014 A109520 A000807` `Adjacent sequences: A141009 A141010 A141011 * A141013 A141014 A141015`
	KEYWORD	`nonn`
	AUTHOR	`Richard Mathar (mathar(AT)strw.leidenuniv.nl), Jul 11 2008`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.