A228151 - cp's OEIS frontend

A228151 Denominators of r(n) = r(n-1) + r(n-2) + B_(n-2), where B_n is the n-th Bernoulli number A027641(n)/A027642(n).

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	6
6	5
7	30
8	105
9	70
10	35
11	70
12	231
13	2310
14	143
15	30030
16	15015
17	10010
18	85085
19	170170
20	373065
21	25194
22	323323
23	1939938
24	22309287
25	14872858
26	168245
27	74364290
28	15935205
29	223092870
30	1078282205
31	588153930
32	20056049013
33	5142576670
34	393255863
35	9550499530

[1, 1, 1, 2, 3, 6, 5, 30, 105, 70, 35, 70, 231, 2310, 143, 30030, 15015, 10010, 85085, 170170, 373065, 25194, 323323, 1939938, 22309287, 14872858, 168245, 74364290, 15935205, 223092870, 1078282205, 588153930, 20056049013, 5142576670, 393255863, 9550499530]

cp's OEIS Frontend

A228151 Denominators of r(n) = r(n-1) + r(n-2) + B_(n-2), where B_n is the n-th Bernoulli number A027641(n)/A027642(n).

Table of values

List of values