id:A034095 - OEIS Search Results

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Indices of (-1)sigma perfect numbers.

+0
2

1, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 2, 2, 2, 2, 3 (list; graph; listen)

	OFFSET	`0,5`
	FORMULA	`a(n)=(-1)sigma(A034094(n))/A034094(n).`
	CROSSREFS	`Cf. A034094.` `Sequence in context: A079562 A129320 A096831 this_sequence A105971 A080354 A024935` `Adjacent sequences: A034092 A034093 A034094 this_sequence A034096 A034097 A034098`
	KEYWORD	`nonn`
	AUTHOR	`Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp)`

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.