A061766 - cp's OEIS frontend

A061766 a(1) = 4; a(n) = smallest composite number of the form k*a(n-1) + 1.

n	a(n)
1	4
2	9
3	10
4	21
5	22
6	45
7	46
8	93
9	94
10	95
11	96
12	289
13	290
14	291
15	292
16	585
17	586
18	1173
19	1174
20	1175
21	1176
22	1177
23	1178
24	1179
25	1180
26	2361
27	2362
28	2363
29	2364
30	2365
31	2366
32	2367
33	2368
34	2369
35	2370
36	4741
37	4742
38	4743
39	4744
40	4745
41	4746
42	4747
43	4748
44	4749
45	4750
46	9501
47	9502
48	9503

[4, 9, 10, 21, 22, 45, 46, 93, 94, 95, 96, 289, 290, 291, 292, 585, 586, 1173, 1174, 1175, 1176, 1177, 1178, 1179, 1180, 2361, 2362, 2363, 2364, 2365, 2366, 2367, 2368, 2369, 2370, 4741, 4742, 4743, 4744, 4745, 4746, 4747, 4748, 4749, 4750, 9501, 9502, 9503]

cp's OEIS Frontend

A061766 a(1) = 4; a(n) = smallest composite number of the form k*a(n-1) + 1.

Table of values

List of values