A023584 - OEIS

A023584

Greatest exponent in prime-power factorization of 2*p(n)-1.

1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 3, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 1, 1, 2, 1, 3, 4, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 3, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1

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OFFSET

1,3

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

Max[Transpose[FactorInteger[2 #-1]][[2]]]&/@Prime[Range[100]] (* Harvey P. Dale, Dec 12 2012 *)

CROSSREFS

Sequence in context: A321787 A331596 A023586 * A015182 A057559 A205375

Adjacent sequences: A023581 A023582 A023583 * A023585 A023586 A023587

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved