id:A074239 - OEIS Search Results

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Related to cumulative number of non-twin primes.

+0
2

0, 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 9, 9, 10, 11, 11, 12, 13, 14, 15, 16, 16, 17, 17, 18, 19, 20, 21, 21, 22, 22, 23, 24, 25, 26, 27, 27, 28, 28, 29, 29, 30, 31, 32, 32, 33, 34, 34, 35, 36, 37, 38, 38, 39, 40, 40, 41, 42, 43, 43, 44, 45, 46, 47, 47, 48, 49, 50 (list; graph; listen)

	OFFSET	`0,6`
	LINKS	`Paul Nanninga, Table of n, a(n) for n = 0..100`
	FORMULA	`Take the sequence of odd primes p(n); set a(0) = 0; if p(n+1)-p(n)=2 a(n+1) = a(n), if p(n+1)-p(n) > 2 a(n+1) = a(n) + 1.`
	CROSSREFS	`Sequence in context: A135672 A064506 A082774 this_sequence A064488 A049472 A125229` `Adjacent sequences: A074236 A074237 A074238 this_sequence A074240 A074241 A074242`
	KEYWORD	`easy,nonn`
	AUTHOR	`Rudi Huysmans (rudi.huysmans(AT)pandora.be), Sep 18 2002`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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