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A181591 a(n) = binomial(bigOmega(n),omega(n)), where omega = A001221 and bigOmega = A001222. 15
1, 1, 1, 2, 1, 1, 1, 3, 2, 1, 1, 3, 1, 1, 1, 4, 1, 3, 1, 3, 1, 1, 1, 6, 2, 1, 3, 3, 1, 1, 1, 5, 1, 1, 1, 6, 1, 1, 1, 6, 1, 1, 1, 3, 3, 1, 1, 10, 2, 3, 1, 3, 1, 6, 1, 6, 1, 1, 1, 4, 1, 1, 3, 6, 1, 1, 1, 3, 1, 1, 1, 10, 1, 1, 3, 3, 1, 1, 1, 10, 4, 1, 1, 4, 1, 1, 1, 6, 1, 4, 1, 3, 1, 1, 1, 15, 1, 3, 3, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
FORMULA
a(n) = A007318(A001222(n),A001221(n)).
a(n) = A088529(n) = A136565(n) for 2 <= n < 24.
a(n) = A136277(A156552(n)). - Antti Karttunen, May 29 2017
MATHEMATICA
a[n_] := Binomial[PrimeOmega[n], PrimeNu[n]]; Table[a[n], {n, 1, 100}] (* Jean-François Alcover, Jun 29 2013 *)
PROG
(PARI) a(n) = binomial(bigomega(n), omega(n)); \\ Michel Marcus, Jul 10 2022
CROSSREFS
Cf. A088529, A136565 (equal for n = 2..23).
Sequence in context: A088529 A267116 A136565 * A347442 A336424 A353236
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 01 2010
STATUS
approved

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Last modified February 21 22:50 EST 2024. Contains 370239 sequences. (Running on oeis4.)