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A162172
Absolute value of ( numerator + denominator of Bernoulli(2*n)).
0
2, 7, 29, 43, 29, 71, 2039, 13, 3107, 44665, 174281, 854651, 236361361, 8553109, 23749460159, 8615841290327, 7709321040707, 2577687858373, 26315271553051558183, 2929993913841565, 261082718496449108521, 1520097643918070804497, 27833269579301024234333
OFFSET
0,1
FORMULA
a(n)=|A000367(n)+A002445(n)|.
EXAMPLE
a(0) = 2 = 1+1. a(1) = 7=1+6. a(2) =29 = -1+30.
MATHEMATICA
Abs[Numerator[#]+Denominator[#]]&/@BernoulliB[2*Range[0, 30]] (* Harvey P. Dale, Jul 20 2024 *)
CROSSREFS
Sequence in context: A076043 A180448 A116968 * A274682 A359633 A339868
KEYWORD
nonn
AUTHOR
EXTENSIONS
Offset corrected, 3117 replaced by 3107, 2374494610159 by 23749460159 - R. J. Mathar, May 21 2010.
STATUS
approved