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A165823
Large denominators of Bernoulli numbers. Mix A002445, 2*A141421 .
1
1, 2, 6, 24, 30, 1440, 42, 120960, 30, 7257600, 66, 958003200, 2730, 5230697472000, 6, 62768369664000, 510, 64023737057280000
OFFSET
0,2
COMMENTS
b(n)=a(2n+1)/a(2n) =2,4,48,2880,241920,145152,= 2*(1,2,24,1440,=1,2*A141421). Among other denominators, A027642,A141056,A164020. 2*A141421 is second bisection of A091137 which is linked to Bernoulli via A027760. See A160014,von Staudt-Clausen theorem.
CROSSREFS
Sequence in context: A066332 A069141 A158977 * A263690 A137326 A163912
KEYWORD
nonn,uned
AUTHOR
Paul Curtz, Sep 28 2009
STATUS
approved