id:A062953 - OEIS Search Results

Search: id:A062953

Displaying 1-1 of 1 results found.

page 1

Multiplicative with a(p^e) = -p.

+0
4

1, -2, -3, -2, -5, 6, -7, -2, -3, 10, -11, 6, -13, 14, 15, -2, -17, 6, -19, 10, 21, 22, -23, 6, -5, 26, -3, 14, -29, -30, -31, -2, 33, 34, 35, 6, -37, 38, 39, 10, -41, -42, -43, 22, 15, 46, -47, 6, -7, 10, 51, 26, -53, 6, 55, 14, 57, 58, -59, -30, -61, 62, 21, -2, 65, -66, -67, 34, 69, -70, -71, 6, -73, 74, 15, 38, 77, -78, -79 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Except for first term, row products of A142971. - Mats O. Granvik and Gary W. Adamson (mgranvik(AT)abo.fi), Jul 15 2008`
	FORMULA	`a(n) = Sum_{ d divides n } mu(d)*sigma(d).`
	CROSSREFS	`Apart from signs, essentially same as A007947.` `Cf. A142971.` `Sequence in context: A088835 A007947 A015053 this_sequence A015052 A053166 A166140` `Adjacent sequences: A062950 A062951 A062952 this_sequence A062954 A062955 A062956`
	KEYWORD	`mult,sign`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 21 2001`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research