id:A067658 - OEIS Search Results

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Odd integers n such n = gcd(((n-1)/2)!+1,((n-1)/2)^((n-1)/2)+1).

+0
5

7, 47, 79, 103, 127, 191, 199, 263, 367, 383, 431, 479, 503, 599, 607, 631, 727, 743, 823, 839, 863, 887, 991, 1087, 1151, 1319, 1367, 1423, 1487, 1511, 1583, 1663, 1783, 1823, 1871, 1951, 2039, 2063, 2111, 2143, 2287, 2311, 2383, 2423, 2447, 2503, 2551 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`gcd(k!+1,k^k+1)= 1 or 2k+1 with 2k+1 prime but if 2m+1 is prime 2m+1 is not necessarily in the sequence.`
	CROSSREFS	`Sequence in context: A122731 A059452 A141882 this_sequence A044490 A139916 A009219` `Adjacent sequences: A067655 A067656 A067657 this_sequence A067659 A067660 A067661`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 03 2002`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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