id:A131807 - OEIS Search Results

Search: id:A131807

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Partial sums of A131377.

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

	OFFSET	`0,2`
	MAPLE	`P:=proc(n) local i, k, s; k:=1; s:=0; for i from 0 by 1 to n do if isprime(i) then if k=1 then k:=0; else k:=1; fi; fi; s:=s+k; print(s); od; end: P(100);`
	CROSSREFS	`Cf. A131377.` `Sequence in context: A078881 A066997 A006165 this_sequence A104351 A070172 A130128` `Adjacent sequences: A131804 A131805 A131806 this_sequence A131808 A131809 A131810`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Jul 18 2007`

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Last modified December 3 01:16 EST 2008. Contains 151161 sequences.

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