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A292251 The 3-adic valuation of A048673(n). 6
0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 4, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,13

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..16384

FORMULA

a(n) = A007814(1+A292250(n)).

a(n) = A007949(A048673(n)).

a(n) = A007949(3*A048673(n)) - 1.

a(n) = A292252(2n)-1.

MATHEMATICA

IntegerExponent[#, 3] & /@ Table[(Times @@ Power[If[# == 1, 1, NextPrime@ #] & /@ First@ #, Last@ #] + 1)/2 &@ Transpose@ FactorInteger@ n, {n, 120}] (* Michael De Vlieger, Sep 12 2017 *)

CROSSREFS

One less than the even bisection of A292252.

Cf. A007814, A007949, A048673, A292250.

Cf. also A292241, A292261.

Sequence in context: A258764 A109083 A256812 * A231715 A137678 A218855

Adjacent sequences:  A292248 A292249 A292250 * A292252 A292253 A292254

KEYWORD

nonn

AUTHOR

Antti Karttunen, Sep 12 2017

STATUS

approved

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Last modified February 21 20:23 EST 2020. Contains 332111 sequences. (Running on oeis4.)