id:A140210 - OEIS Search Results

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Prod(h: h=1 mod 4 and h|n).

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1, 1, 1, 1, 5, 1, 1, 1, 9, 5, 1, 1, 13, 1, 5, 1, 17, 9, 1, 5, 21, 1, 1, 1, 125, 13, 9, 1, 29, 5, 1, 1, 33, 17, 5, 9, 37, 1, 13, 5, 41, 21, 1, 1, 2025, 1, 1, 1, 49, 125, 17, 13, 53, 9, 5, 1, 57, 29, 1, 5, 61, 1, 189, 1, 4225, 33, 1, 17, 69, 5, 1, 9, 73, 37, 125, 1, 77, 13, 1, 5, 729, 41, 1, 21 (list; graph; listen)

	OFFSET	`1,5`
	MAPLE	`with (numtheory): a:= n-> mul (i, i=select (h-> irem(h, 4)=1, divisors (n))): seq (a(n), n=1..120); [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Jul 28 2009]`
	CROSSREFS	`Cf. A007955, A140211, A136655, A140213, A140214, A140215, A136655.` `Sequence in context: A028235 A028236 A066504 this_sequence A010130 A145295 A091051` `Adjacent sequences: A140207 A140208 A140209 this_sequence A140211 A140212 A140213`
	KEYWORD	`nonn`
	AUTHOR	`R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 27 2008`
	EXTENSIONS	`More terms from Alois P. Heinz (heinz(AT)hs-heilbronn.de), Jul 28 2009`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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