id:A071640 - OEIS Search Results

Search: id:A071640

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a(n) = sum(i=1, n, A040051(i) ).

+0
3

1, 1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 7, 8, 9, 9, 10, 11, 12, 12, 13, 13, 13, 14, 15, 15, 15, 15, 15, 16, 16, 16, 17, 18, 18, 19, 20, 21, 22, 23, 23, 24, 24, 25, 26, 26, 26, 26, 27, 28, 28, 29, 30, 31, 32, 32, 33, 33, 33, 33, 34, 35, 35, 36, 36, 36, 36, 37, 38, 39, 39, 40, 41, 42, 42 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Does 2*a(n) > n for n>2? Cf. A086144.`
	PROGRAM	`(PARI) for(n=1, 150, print1(sum(i=1, n, (1-(-1)^(polcoeff(1/eta(x), i, x)))/2), ", "))`
	CROSSREFS	`Cf. A000041, A086144, A040051, A087177.` `Sequence in context: A034151 A101272 A006160 this_sequence A102674 A097623 A069754` `Adjacent sequences: A071637 A071638 A071639 this_sequence A071641 A071642 A071643`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 22 2002`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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