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A213446 Numerators of higher order Bernoulli numbers.
(Formerly N1674)
1
1, 5, 251, 19087, 1070017, 134211265, 703604254357, 8164168737599, 8092989203533249, 12600467236042756559, 8136836498467582599787, 440495080723071436695083, 11816334311483623162503196771, 19935908483981827227406276943, 239295997830894998532654988331179 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

See Nørlund for precise definition.

See A002657 which is the main entry for this sequence. - Peter Luschny, Oct 02 2016

REFERENCES

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

LINKS

Table of n, a(n) for n=0..14.

N. E. Nørlund, Vorlesungen über Differenzenrechnung, Springer, 1924, p. 461.

MAPLE

# Function B(n, x) defined in A213449.

A213446 := n -> numer(B(2*n, 2*n)):

seq(A213446(n), n=0..14); # Peter Luschny, Oct 02 2016

MATHEMATICA

a[n_] := Numerator[NorlundB[2n, 2n]];

Table[a[n], {n, 0, 14}] (* Jean-François Alcover, Jun 29 2019 *)

CROSSREFS

Bisection (even indices) of A002657.

Sequence in context: A142202 A042219 A198600 * A276485 A308295 A060943

Adjacent sequences:  A213443 A213444 A213445 * A213447 A213448 A213449

KEYWORD

nonn,frac

AUTHOR

N. J. A. Sloane, Jun 12 2012

EXTENSIONS

More terms at the suggestion of Altug Alkan from Peter Luschny, Oct 02 2016

STATUS

approved

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Last modified July 30 12:08 EDT 2021. Contains 346359 sequences. (Running on oeis4.)