id:A158662 - OEIS Search Results

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Sum of primes <= n if 1 is counted as a prime.

+0
6

1, 3, 6, 6, 11, 11, 18, 18, 18, 18, 29, 29, 42, 42, 42, 42, 59, 59, 78, 78, 78, 78, 101, 101, 101, 101, 101, 101, 130, 130, 161, 161, 161, 161, 161, 161, 198, 198, 198, 198, 239, 239, 282, 282, 282, 282, 329, 329, 329, 329, 329, 329 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A034387(n) + 1. a(p) - a(p-1) = p, for p = primes (A000040), a(c) - a(c-1) = 0, for c = composite numbers (A002808).`
	CROSSREFS	`Cf. A034387, A000040, A002808.` `Sequence in context: A135610 A157018 A113497 this_sequence A119980 A066779 A132384` `Adjacent sequences: A158659 A158660 A158661 this_sequence A158663 A158664 A158665`
	KEYWORD	`nonn`
	AUTHOR	`Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Mar 23 2009, Apr 12 2009`

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

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