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A179628

Sum of the numbers already killed in the first jump of a Sieve of Eratosthenes table.

0, 4, 23, 39, 116, 175, 306, 393, 578, 966, 1054, 1483, 1907, 2116, 2608, 3251, 3980, 4398, 5350, 5967, 6469, 7450, 8336, 9624, 11197, 12084, 12796, 13946, 14700, 15916, 19642, 21058, 22795, 23482, 27079, 28127, 30116, 32833, 34643, 37530, 39819

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OFFSET

0,2

COMMENTS

2(4) = 0, 3(6) = 4, 5(10) = 23(6,8,9), 7(14) = 39(8,9,10,12), 11(22) = 116(12,14,15,16,18,20,21)

Sum of the composite numbers from prime(n) up to 2*prime(n)-1. [From R. J. Mathar, Jul 21 2010]

LINKS

Table of n, a(n) for n=0..40.

CROSSREFS

Cf. A000040

Sequence in context: A169599 A106684 A239624 * A339392 A383464 A030653

Adjacent sequences: A179625 A179626 A179627 * A179629 A179630 A179631

KEYWORD

easy,nonn

AUTHOR

Odimar Fabeny, Jul 21 2010

EXTENSIONS

More terms from R. J. Mathar, Jul 21 2010

STATUS

approved

URL: https://oeis.org/A179628

⇱ A179628 - OEIS