A305702 - cp's OEIS frontend

A305702 a(n) is the denominator of Sum_{primes p < n} 1/(n-p).

n	a(n)
1	1
2	1
3	1
4	2
5	6
6	12
7	20
8	10
9	84
10	840
11	72
12	630
13	1320
14	2772
15	1560
16	90090
17	42
18	240240
19	1904
20	46410
21	95760
22	639540
23	5040
24	9699690
25	637560
26	14316120
27	92400
28	176125950
29	308880
30	20078358300
31	475020
32	67690350
33	7447440
34	116925953760
35	110880
36	1002802450650
37	318240
38	122453100
39	906665760
40	165723680430

[1, 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, 67690350, 7447440, 116925953760, 110880, 1002802450650, 318240, 122453100, 906665760, 165723680430]

cp's OEIS Frontend

A305702 a(n) is the denominator of Sum_{primes p < n} 1/(n-p).

Table of values

List of values