A165949 - OEIS

This site is supported by donations to The OEIS Foundation.

A165949

a(n) = A027762(n)/A165734(n).

1, 1, 7, 1, 11, 91, 1, 17, 133, 11, 23, 91, 1, 29, 2387, 17, 1, 63973, 1, 451, 301, 23, 47, 1547, 11, 53, 133, 29, 59, 1892891, 1, 17, 10787, 1, 781, 4670029, 1, 1, 553, 7667, 83, 113477, 1, 2047, 45353, 47, 1, 150059, 1, 1111, 721, 53, 107, 6973057, 253, 55709, 7 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	MAPLE	`A165734 := proc(n) op( 1+(n mod 2), [30, 6]) ; end:` `A027762 := proc(n) a := 0 ; p := 2 ; while p-1 <= 2n do if (2n) mod (p-1) = 0 then a := a+1/p ; fi; p := nextprime(p) ; od: denom(a) ; end:` `A165949 := proc(n) A027762(n)/A165734(n) ; end: seq(A165949(n), n=1..80) ; # R. J. Mathar, Oct 05 2009`
	CROSSREFS	`Cf. A124886.` `Sequence in context: A124886 A061195 A074283 * A013600 A060393 A060394` `Adjacent sequences: A165946 A165947 A165948 * A165950 A165951 A165952`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Oct 01 2009`
	EXTENSIONS	`Extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 05 2009`

Content is available under The OEIS End-User License Agreement .

Last modified February 17 00:09 EST 2012. Contains 205978 sequences.