A001749 - OEIS

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A001749

Primes X 4.

8, 12, 20, 28, 44, 52, 68, 76, 92, 116, 124, 148, 164, 172, 188, 212, 236, 244, 268, 284, 292, 316, 332, 356, 388, 404, 412, 428, 436, 452, 508, 524, 548, 556, 596, 604, 628, 652, 668, 692, 716, 724, 764, 772, 788, 796, 844, 892, 908, 916, 932, 956, 964 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`n such that sum(d\|n,(-1)^d)=A048272(n)=2 - Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 14 2002` `Solutions of the differential equation n'=n+4, where n' is the arithmetic derivative of n. - Paolo P. Lava, Feb 02 2012.`
	LINKS	`Paolo P. Lava, Table of n, a(n) for n = 1..20000`
	MATHEMATICA	`Prime[Range[22]]*4 - Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 29 2008`
	CROSSREFS	`Sequence in context: A033477 A105936 A084488 * A175786 A072843 A072902` `Adjacent sequences: A001746 A001747 A001748 * A001750 A001751 A001752`
	KEYWORD	`nonn,changed`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 13 10:39 EST 2012. Contains 205459 sequences.