id:A045762 - OEIS Search Results

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2^n-1 is not prime.

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0, 1, 4, 6, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`8 belongs to the sequence because 2^8-1=255 is not a prime.`
	CROSSREFS	`Cf. Mersenne primes A000043.` `Sequence in context: A031977 A091985 A091984 this_sequence A047748 A085558 A084984` `Adjacent sequences: A045759 A045760 A045761 this_sequence A045763 A045764 A045765`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`Felice Russo (felice.russo(AT)katamail.com)`
	EXTENSIONS	`More terms from Jennifer D. Secor (s1175994(AT)cedarville.edu)`

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Last modified December 6 13:45 EST 2009. Contains 170429 sequences.

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