id:A054251 - OEIS Search Results

Search: id:A054251

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a(0) = 1; a(n) = Sum(0 <= k < n and GCD(k, n) != 1; a(k)).

+0
2

1, 0, 1, 1, 2, 1, 5, 1, 9, 7, 19, 1, 45, 1, 83, 79, 165, 1, 417, 1, 827, 639, 1575, 1, 3875, 927, 7025, 5069, 14689, 1, 35461, 1, 64199, 47175, 128399, 52727, 309767, 1, 566565, 409567, 1186863, 1, 2835257, 1, 5202425, 4888729, 10357675, 1, 26066615 (list; graph; listen)

	OFFSET	`0,5`
	CROSSREFS	`Cf. A045545.` `Sequence in context: A093127 A115123 A132081 this_sequence A119763 A092142 A140879` `Adjacent sequences: A054248 A054249 A054250 this_sequence A054252 A054253 A054254`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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