id:A092505 - OEIS Search Results

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A002430(n) / A046990(n), n>0.

+0
3

1, 1, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 4, 2, 1, 2, 2, 2, 2, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4, 2, 1, 2, 2, 2, 2, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 2, 8, 2, 4, 2, 1, 2, 2, 2, 2, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 2, 8, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4 (list; graph; listen)

	OFFSET	`1,3`
	PROGRAM	`(PARI) a(n)=if(n<1, 0, numerator(polcoeff(Ser(tan(x)), 2n-1))/numerator(polcoeff(Ser(log(1/cos(x))), 2n))", ")))`
	CROSSREFS	`Sequence in context: A080942 A099812 A068068 this_sequence A066086 A160520 A145866` `Adjacent sequences: A092502 A092503 A092504 this_sequence A092506 A092507 A092508`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan, Apr 05 2004`

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

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