id:A068528 - OEIS Search Results

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Let N(2n) denote the numerator of B(2n), the 2n-th Bernoulli number and D(2n) the denominator, sequence gives values of n such that gcd(N(2n),D(2n-2))=5.

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5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 105, 115, 125, 135, 145, 155, 165, 185, 195, 205, 215, 225, 235, 245, 255, 265, 275, 285, 295, 305, 315, 335, 345, 355, 365, 375, 395, 405, 415, 445, 455, 465, 475, 485, 495, 505, 515, 525, 535, 545, 555, 565, 575, 585 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`built with Elemer Labos (LABOS(AT)ana.sote.hu). All terms are of the form 5+10*k. If in almost cases a(n+1)-a(n)=10 there are some jumps : a(18)-a(17)=20.`
	CROSSREFS	`Cf. A007703.` `Sequence in context: A121025 A031322 A017329 this_sequence A061443 A147495 A147426` `Adjacent sequences: A068525 A068526 A068527 this_sequence A068529 A068530 A068531`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 21 2002`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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