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A280727 Number of even divisors of Bell(n). 2
0, 0, 1, 0, 0, 4, 0, 0, 24, 0, 0, 8, 0, 0, 4, 0, 0, 20, 0, 0, 24, 0, 0, 8, 0, 0, 16, 0, 0, 32, 0, 0, 16, 0, 0, 48, 0, 0, 8, 0, 0, 32, 0, 0, 32, 0, 0, 64, 0, 0, 16, 0, 0, 32, 0, 0, 1152, 0, 0, 16, 0, 0, 4, 0, 0, 16, 0, 0, 16, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Amiram Eldar, Table of n, a(n) for n = 0..112

FORMULA

a(n) = A183063(A000110(n)).

MATHEMATICA

f[n_]:=Block[{d=Divisors[BellB[n]]}, Count[EvenQ[d], True]]; Table[f[n], {n, 0, 60}]

CROSSREFS

Cf. A000110, A183063, A280589, A280638.

Sequence in context: A019218 A125762 A286216 * A232357 A196302 A307186

Adjacent sequences:  A280724 A280725 A280726 * A280728 A280729 A280730

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Jan 08 2017

EXTENSIONS

Offset corrected by Amiram Eldar, Nov 23 2019

STATUS

approved

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Last modified May 27 12:27 EDT 2020. Contains 334657 sequences. (Running on oeis4.)