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A126225 Least number k>0 such that numerator of Sum[ 1/Prime[i]^n, {i,1,k} ] is a prime. +0
1
2, 2, 3, 2, 3, 5, 3, 11, 3, 22 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A037126 A080092 A164738 this_sequence A056160 A106245 A129568

Adjacent sequences: A126222 A126223 A126224 this_sequence A126226 A126227 A126228

KEYWORD

hard,more,nonn

AUTHOR

Alexander Adamchuk (alex(AT)kolmogorov.com), Mar 08 2007

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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