id:A004051 - OEIS Search Results

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Primes of the form 2^a + 3^b.

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2

2, 3, 5, 7, 11, 13, 17, 19, 29, 31, 41, 43, 59, 67, 73, 83, 89, 97, 113, 131, 137, 251, 257, 283, 307, 337, 499, 521, 593, 733, 761, 857, 1033, 1051, 1753, 2129, 2203, 2251, 2699, 2777, 4099, 4177, 4339, 6563, 6569, 6577, 6689, 8219, 8273, 8609, 10657, 14753 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	PROGRAM	`(Matlab) n = 0; for a = 0:30 p1 = 2^a; for b = 0:19; p2 = 3^b; p3 = p1 + p2; if isprime(p3) n = n + 1; c(n) = p3; end; end; end; c = sort(c); k = size(c, 2); for i = 2:k if c(i-1) == c(i) c(i-1) = 0 end; end; c = sort(c); c = sym(c) - Lei Zhou (lzhou5(AT)emory.edu), Jan 26 2005`
	CROSSREFS	`Sequence in context: A092570 A133956 A141409 this_sequence A127047 A119615 A061771` `Adjacent sequences: A004048 A004049 A004050 this_sequence A004052 A004053 A004054`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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