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A037035 Least k such that 2^n+1+k is a prime. 1
0, 0, 0, 2, 0, 4, 2, 2, 0, 8, 6, 4, 2, 16, 26, 2, 0, 28, 2, 20, 6, 16, 14, 8, 42, 34, 14, 28, 2, 10, 2, 10, 14, 16, 24, 52, 30, 8, 6, 22, 14, 26, 14, 28, 6, 58, 14, 4, 20, 68, 54, 20, 20, 4, 158, 2, 80, 8, 68, 130, 32, 14, 134, 28, 12, 130, 8, 2, 32, 28, 24, 10, 14, 28, 36, 32, 14 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

EXAMPLE

a(5)=4 because 2^5+1+4=37 that is a prime.

CROSSREFS

Cf. A016014.

A013597(n) - 1.

Sequence in context: A185879 A081880 A144289 * A159984 A112824 A195133

Adjacent sequences:  A037032 A037033 A037034 * A037036 A037037 A037038

KEYWORD

nonn

AUTHOR

Felice Russo (frusso(AT)micron.com)

EXTENSIONS

More terms from Erich Friedman (erich.friedman(AT)stetson.edu)

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Last modified February 16 12:41 EST 2012. Contains 205909 sequences.