A228970 - cp's OEIS frontend

A228970 Triangle of denominators of the coefficients t(n,k) in the formula B(2n) = -sum_{k=1..n-1} t(n,k)B(2k)B(2n-2k), where the B() are the even-indexed Bernoulli numbers.

n	a(n)
2	5
3	7
4	7
5	85
6	17
7	85
8	341
9	341
10	341
11	341
12	455
13	91
14	65
15	91
16	455
17	5461
18	5461
19	5461
20	5461
21	5461
22	5461
23	4369
24	4369
25	21845
26	257
27	21845
28	4369
29	4369
30	9709
31	9709
32	1387
33	9709
34	9709
35	1387
36	9709
37	9709

[5, 7, 7, 85, 17, 85, 341, 341, 341, 341, 455, 91, 65, 91, 455, 5461, 5461, 5461, 5461, 5461, 5461, 4369, 4369, 21845, 257, 21845, 4369, 4369, 9709, 9709, 1387, 9709, 9709, 1387, 9709, 9709]

cp's OEIS Frontend

A228970 Triangle of denominators of the coefficients t(n,k) in the formula B(2n) = -sum_{k=1..n-1} t(n,k)B(2k)B(2n-2k), where the B() are the even-indexed Bernoulli numbers.

Table of values

List of values

cp's OEIS Frontend

A228970 Triangle of denominators of the coefficients t(n,k) in the formula B(2n) = -sum_{k=1..n-1} t(n,k)*B(2k)*B(2n-2k), where the B() are the even-indexed Bernoulli numbers.

Table of values

List of values

A228970 Triangle of denominators of the coefficients t(n,k) in the formula B(2n) = -sum_{k=1..n-1} t(n,k)B(2k)B(2n-2k), where the B() are the even-indexed Bernoulli numbers.