A130492 - cp's OEIS frontend

A130492 a(n) = denominator of Sum_{k=1..n} k^mu(n+1-k), where mu(m) = A008683(m).

n	a(n)
1	1
2	1
3	2
4	6
5	12
6	20
7	10
8	84
9	840
10	72
11	630
12	1320
13	2772
14	1560
15	90090
16	42
17	240240
18	1904
19	46410
20	95760
21	639540
22	5040
23	9699690
24	637560
25	14316120
26	92400
27	176125950
28	308880
29	20078358300
30	475020
31	33845175
32	7447440
33	116925953760
34	110880
35	501401225325
36	2227680
37	244906200

[1, 1, 2, 6, 12, 20, 10, 84, 840, 72, 630, 1320, 2772, 1560, 90090, 42, 240240, 1904, 46410, 95760, 639540, 5040, 9699690, 637560, 14316120, 92400, 176125950, 308880, 20078358300, 475020, 33845175, 7447440, 116925953760, 110880, 501401225325, 2227680, 244906200]

cp's OEIS Frontend

A130492 a(n) = denominator of Sum_{k=1..n} k^mu(n+1-k), where mu(m) = A008683(m).

Table of values

List of values