id:A131808 - OEIS Search Results

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Partial sums of A131378.

+0
1

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

	OFFSET	`0,6`
	MAPLE	`P:=proc(n) local i, k, s; k:=0; 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. A131378.` `Adjacent sequences: A131805 A131806 A131807 this_sequence A131809 A131810 A131811` `Sequence in context: A004258 A109785 A058224 this_sequence A104406 A080344 A025782`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Jul 18 2007`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

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