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A292248 a(n) = A292245(A048673(n)). 8
1, 2, 2, 4, 5, 4, 4, 8, 9, 10, 11, 8, 8, 8, 8, 16, 17, 18, 18, 20, 21, 22, 22, 16, 17, 16, 16, 16, 17, 16, 17, 32, 32, 34, 34, 36, 36, 36, 37, 40, 41, 42, 42, 44, 45, 44, 44, 32, 33, 34, 34, 32, 32, 32, 33, 32, 33, 34, 35, 32, 33, 34, 34, 64, 64, 64, 64, 68, 69, 68, 69, 72, 73, 72, 72, 72, 72, 74, 74, 80, 81, 82, 82, 84, 85, 84, 84, 88, 89, 90, 91 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..8192

FORMULA

a(n) = A292245(A048673(n)).

a(n) + A292247(n) = n.

MATHEMATICA

f[n_] := Times @@ Power[If[# == 1, 1, NextPrime[#, -1]] & /@ First@ #, Last@ #] &@ Transpose@ FactorInteger[2 n - 1]; g[n_] := (Times @@ Power[If[# == 1, 1, NextPrime@ #] & /@ First@ #, Last@ #] + 1)/2 &@ Transpose@ FactorInteger@ n; Map[FromDigits[#, 2] &[IntegerDigits[#, 3] /. 2 -> 0] &, Map[a, Array[g, 91]]] (* _Michael De Vlieger_, Sep 16 2017 *)

CROSSREFS

Cf. A048673, A292244, A292247.

Sequence in context: A187214 A179821 A292272 * A210762 A302985 A302983

Adjacent sequences:  A292245 A292246 A292247 * A292249 A292250 A292251

KEYWORD

nonn

AUTHOR

_Antti Karttunen_, Sep 16 2017

STATUS

approved

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Last modified February 21 18:37 EST 2020. Contains 332107 sequences. (Running on oeis4.)