id:A045920 - OEIS Search Results

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Numbers n such that factorizations of n and n+1 have same number of primes (including multiplicities).

+0
8

2, 9, 14, 21, 25, 27, 33, 34, 38, 44, 57, 75, 85, 86, 93, 94, 98, 116, 118, 121, 122, 124, 133, 135, 141, 142, 145, 147, 153, 158, 164, 170, 171, 174, 177, 201, 202, 205, 213, 214, 217, 218, 230, 244, 245, 253, 284, 285, 296, 298, 301, 302, 326, 332, 334, 350, 356, 361 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A115186 is a subsequence: A001222(A115186(n))=A001222(A115186(n)+1)=n. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 16 2006` `Indices k such that A076191(k) = 0. [From Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 10 2008]`
	REFERENCES	`C. Clawson, Mathematical mysteries, Plenum Press 1996, p. 250`
	CROSSREFS	`Sequence in context: A144472 A071343 A043401 this_sequence A071344 A106360 A024470` `Adjacent sequences: A045917 A045918 A045919 this_sequence A045921 A045922 A045923`
	KEYWORD	`nice,nonn`
	AUTHOR	`Felice Russo (felice.russo(AT)katamail.com)`
	EXTENSIONS	`More terms from David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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