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A157893 Values of m in A080075. 2
1, 2, 3, 2, 4, 3, 5, 3, 4, 3, 6, 4, 5, 4, 7, 4, 5, 4, 6, 4, 5, 4, 8, 5, 6, 5, 7, 5, 6, 5, 9, 5, 6, 5, 7, 5, 6, 5, 8, 5, 6, 5, 7, 5, 6, 5, 10, 6, 7, 6, 8, 6, 7, 6, 9, 6, 7, 6, 8, 6, 7, 6, 11, 6, 7, 6, 8, 6, 7, 6, 9, 6, 7, 6, 8, 6, 7, 6, 10, 6, 7, 6, 8, 6, 7, 6, 9, 6, 7, 6, 8, 6, 7, 6, 12, 7, 8, 7, 9, 7, 8, 7, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..103.

CROSSREFS

Cf. A157892 Values of k in A080075.

A080075 Proth numbers: of the form k*2^m + 1 for k odd, m >= 1 and 2^m > k.

Sequence in context: A139094 A159081 A141285 * A199474 A054384 A026400

Adjacent sequences:  A157890 A157891 A157892 * A157894 A157895 A157896

KEYWORD

nonn

AUTHOR

Zak Seidov, Mar 08 2009

STATUS

approved

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Last modified September 2 08:19 EDT 2014. Contains 246334 sequences.