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A189685 Numbers 2k in A189683. 5
12, 16, 18, 20, 20, 22, 22, 24, 24, 26, 28, 28, 30, 30, 32, 32, 32, 34, 36, 38, 40, 40, 42, 44, 44, 44, 44, 46, 46, 48, 48, 48, 50, 50, 52, 52, 52, 52, 54, 54, 54, 56, 56, 56, 58, 58, 58, 58, 60, 60, 60, 62, 62, 62, 62, 64, 64, 66, 66, 68, 68, 68, 68, 70, 70, 70 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..66.

MATHEMATICA

Flatten[Table[p = Select[First /@ FactorInteger[Abs[Numerator[BernoulliB[n]]]], # >= n+3 &]; Table[n, {Length[p]}], {n, 2, 70, 2}]] (* T. D. Noe, Apr 25 2011 *)

CROSSREFS

Sequence in context: A143090 A328074 A068394 * A126763 A058080 A119911

Adjacent sequences:  A189682 A189683 A189684 * A189686 A189687 A189688

KEYWORD

nonn

AUTHOR

Jonathan Sondow, Apr 25 2011

STATUS

approved

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Last modified January 19 14:53 EST 2020. Contains 331049 sequences. (Running on oeis4.)