id:A145196 - OEIS Search Results

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Partial sums of number of primes < nth-prime p such that p+4 is prime.

+0
1

0, 0, 1, 2, 4, 6, 9, 12, 16, 20, 24, 28, 33, 38, 44, 50, 56, 62, 68, 75, 82, 89, 97, 105, 113, 122, 131, 141, 151, 162, 173, 185, 197, 209, 221, 233, 245, 257, 270, 283, 296, 309, 322, 335, 349, 363, 377, 391, 406, 421, 437, 453, 469, 485, 501, 517, 533, 549, 565 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n) = sum_{i=1..n} A139789(i). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 03 2008]`
	CROSSREFS	`Cf. A139789.` `Adjacent sequences: A145193 A145194 A145195 this_sequence A145197 A145198 A145199` `Sequence in context: A145801 A033291 A105434 this_sequence A061536 A095114 A062048`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Oct 04 2008`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 03 2008`

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Last modified November 7 16:45 EST 2009. Contains 166093 sequences.

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