id:A071941 - OEIS Search Results

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A071941

Nonprimes for which floor(2^n/n) is even.

+0
2

1, 4, 6, 8, 9, 10, 14, 15, 16, 20, 21, 22, 24, 26, 27, 28, 30, 32, 33, 34, 35, 38, 39, 40, 44, 46, 49, 50, 51, 52, 54, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 81, 82, 84, 85, 86, 87, 88, 90, 92, 93, 94, 96, 102, 104, 105, 106, 111, 114, 115 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`Select[ Range[120], EvenQ[ Floor[2^# / # ]] && !PrimeQ[ # ] & ]`
	CROSSREFS	`Cf. A071354.` `Adjacent sequences: A071938 A071939 A071940 this_sequence A071942 A071943 A071944` `Sequence in context: A073303 A104211 A132858 this_sequence A001745 A050695 A035139`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 15 2002`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

AT&T Labs Research