A322569 - cp's OEIS frontend

A322569 a(n)=x is the least integer such that gcd(sigma(x), sigma(x+1)) = 2*n.

n	a(n)
1	13
2	6
3	5
4	27
5	57
6	22
7	12
8	93
9	89
10	236
11	1032
12	14
13	467
14	83
15	58
16	308
17	201
18	118
19	147
20	56
21	82
22	1204
23	6301
24	69
25	596
26	1142
27	106
28	91
29	4167
30	87
31	432
32	381
33	393
34	1407
35	348
36	70
37	5912
38	453
39	233
40	417
41	13692
42	166
43	56493
44	1118
45	88
46	6987
47	54048
48	154
49	1843
50	4490
51	6833
52	2574
53	633
54	689
55	1538

[13, 6, 5, 27, 57, 22, 12, 93, 89, 236, 1032, 14, 467, 83, 58, 308, 201, 118, 147, 56, 82, 1204, 6301, 69, 596, 1142, 106, 91, 4167, 87, 432, 381, 393, 1407, 348, 70, 5912, 453, 233, 417, 13692, 166, 56493, 1118, 88, 6987, 54048, 154, 1843, 4490, 6833, 2574, 633, 689, 1538]

cp's OEIS Frontend

A322569 a(n)=x is the least integer such that gcd(sigma(x), sigma(x+1)) = 2*n.

Table of values

List of values