A335991 - cp's OEIS frontend

A335991 The moment generating function of the limiting distribution of the number of comparisons in quicksort can be written in the form M(t) = m(-2t)/(exp(2gammat)Gamma(1 + 2t)) for |t| < 1/2, where m(z) = Sum_{n >= 0} B(n)z^n/n! for |z| < 1. This sequence gives the denominators of the rational numbers B(n) for n >= 0.

n	a(n)
0	1
1	1
2	4
3	8
4	36
5	3456
6	172800
7	10368000
8	3810240000
9	177811200000
10	9957427200000
11	75278149632000000
12	1912817782149120000000
13	53023308921173606400000000
14	17742659631203112173568000000000
15	426249654980023566857797632000000000

[1, 1, 4, 8, 36, 3456, 172800, 10368000, 3810240000, 177811200000, 9957427200000, 75278149632000000, 1912817782149120000000, 53023308921173606400000000, 17742659631203112173568000000000, 426249654980023566857797632000000000]

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