id:A050217 - OEIS Search Results

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Super-Poulet numbers: numbers whose divisors d all satisfy d|2^d-2.

+0
3

341, 1387, 2047, 2701, 3277, 4033, 4369, 4681, 5461, 7957, 8321, 10261, 13747, 14491, 15709, 18721, 19951, 23377, 31417, 31609, 31621, 35333, 42799, 49141, 49981, 60701, 60787, 65077, 65281, 80581, 83333, 85489, 88357, 90751 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Eric Weisstein's World of Mathematics, Super-Poulet Numbers` `Wikipedia, Super-Poulet number`
	MATHEMATICA	`Select[ Range[ 110000], !PrimeQ[ # ] && OddQ[ # ] && Union[PowerMod[2, Drop[ Divisors[ # ], 1], # ]] == {2} & ]`
	CROSSREFS	`Sequence in context: A083876 A068216 A038473 this_sequence A086837 A020230 A087716` `Adjacent sequences: A050214 A050215 A050216 this_sequence A050218 A050219 A050220`
	KEYWORD	`nonn`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`

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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.

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