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A339319 Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^4. 8
1, 4, 4, 14, 4, 20, 4, 40, 14, 20, 4, 76, 4, 20, 20, 105, 4, 76, 4, 76, 20, 20, 4, 236, 14, 20, 40, 76, 4, 116, 4, 252, 20, 20, 20, 306, 4, 20, 20, 236, 4, 116, 4, 76, 76, 20, 4, 656, 14, 76, 20, 76, 4, 236, 20, 236, 20, 20, 4, 476, 4, 20, 76, 574, 20, 116, 4, 76, 20, 116 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Number of factorizations of n into factors (greater than 1) of 4 kinds.

LINKS

Table of n, a(n) for n=1..70.

FORMULA

a(p^k) = A023003(k) for prime p.

CROSSREFS

Cf. A001055, A023003, A301830, A339318, A339320, A339321, A339322, A339323, A339324.

Sequence in context: A241250 A097335 A255297 * A347428 A263870 A263796

Adjacent sequences:  A339316 A339317 A339318 * A339320 A339321 A339322

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Nov 30 2020

STATUS

approved

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Last modified November 26 17:52 EST 2021. Contains 349343 sequences. (Running on oeis4.)