A083538 - cp's OEIS frontend

A083538 a(n) = sigma(n)*sigma(n+1)/gcd(sigma(n+1), sigma(n))^2.

n	a(n)
1	3
2	12
3	28
4	42
5	2
6	6
7	120
8	195
9	234
10	6
11	21
12	2
13	84
14	1
15	744
16	558
17	78
18	780
19	210
20	336
21	72
22	6
23	10
24	1860
25	1302
26	420
27	35
28	420
29	60
30	36
31	2016
32	336
33	72
34	72
35	4368
36	3458
37	570
38	210
39	1260
40	105
41	112
42	264
43	231
44	182
45	156
46	6
47	372
48	7068
49	589
50	744
51	1764
52	1323
53	180
54	15
55	15
56	6
57	72
58	6
59	70

[3, 12, 28, 42, 2, 6, 120, 195, 234, 6, 21, 2, 84, 1, 744, 558, 78, 780, 210, 336, 72, 6, 10, 1860, 1302, 420, 35, 420, 60, 36, 2016, 336, 72, 72, 4368, 3458, 570, 210, 1260, 105, 112, 264, 231, 182, 156, 6, 372, 7068, 589, 744, 1764, 1323, 180, 15, 15, 6, 72, 6, 70]

cp's OEIS Frontend

A083538 a(n) = sigma(n)*sigma(n+1)/gcd(sigma(n+1), sigma(n))^2.

Table of values

List of values