A083688 - cp's OEIS frontend

A083688 Denominator of B(2n)*H(2n)/n where B(k) is the k-th Bernoulli number and H(k) the k-th harmonic number.

n	a(n)
1	4
2	144
3	360
4	33600
5	15120
6	34927200
7	2162160
8	172972800
9	1543782240
10	10242872640
11	10346336
12	2338727174784
13	53542288800
14	4818805992000
15	3228118134040800
16	1178332991611776000
17	78765574305600
18	12256711017694416000
19	2914326249307200
20	3205758874237920000
21	358462128664785600

[4, 144, 360, 33600, 15120, 34927200, 2162160, 172972800, 1543782240, 10242872640, 10346336, 2338727174784, 53542288800, 4818805992000, 3228118134040800, 1178332991611776000, 78765574305600, 12256711017694416000, 2914326249307200, 3205758874237920000, 358462128664785600]

cp's OEIS Frontend

A083688 Denominator of B(2n)*H(2n)/n where B(k) is the k-th Bernoulli number and H(k) the k-th harmonic number.

Table of values

List of values