id:A123360 - OEIS Search Results

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Least m such that 5^n+2^m is prime.

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0, 1, 2, 1, 4, 7, 2, 5, 12, 5, 2, 15, 8, 5, 10, 37, 24, 1, 14, 17, 28, 41, 16, 145, 44, 101, 8, 35, 64, 43, 74, 63, 24, 35, 16, 13, 88, 81, 14, 53, 44, 21, 46, 89, 56, 7, 70, 97, 200, 59, 8, 35, 24, 45, 22, 53, 12, 77, 6, 19, 4, 165, 18, 5, 488, 157, 26, 101, 120, 59, 4, 115, 44, 89 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`a(0)=0 because 5^0+2^0=1+1=2 is prime,` `a(5)=7 because 5^5+2^7=3125+128=3253 is prime,`
	CROSSREFS	`Cf. A123340 = least m such that 2^n+3^m is prime, A123342 = least m such that 2^n+5^m is prime.` `Cf. A123340, A123342.` `Sequence in context: A048787 A030102 A072010 this_sequence A072015 A123242 A139769` `Adjacent sequences: A123357 A123358 A123359 this_sequence A123361 A123362 A123363`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Oct 12 2006`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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