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Denominators of Blandin-Diaz compositional Bernoulli numbers (B^Z^2)_1,n.
17

%I #9 Jan 24 2024 10:07:44

%S 1,8,432,144,324000,64800,16669800

%N Denominators of Blandin-Diaz compositional Bernoulli numbers (B^Z^2)_1,n.

%H Hector Blandin and Rafael Diaz, <a href="https://arxiv.org/abs/0708.0809">Compositional Bernoulli numbers</a>, arXiv:0708.0809 [math.CO], 2007-2008, p. 9, 2nd table.

%e 1, -1/8, 11/432, 1/144, -217/324000, -157/64800, -21503/16669800.

%Y Numerators are A132098.

%Y Cf. A132092-A132097.

%K frac,more,nonn

%O 0,2

%A _Jonathan Vos Post_, Aug 09 2007