A098650 - cp's OEIS frontend

A098650 Smallest odd pseudoprime k > b to bases p_i, i.e., the smallest composite number k > b such that p_i^(k-1)-1 is divisible by k, p_i are the prime factors of b, where b is the n-th squarefree number, A005117(n).

n	a(n)
1	9
2	341
3	91
4	217
5	1105
6	25
7	561
8	15
9	21
10	561
11	1541
12	45
13	45
14	703
15	645
16	33
17	561
18	35
19	1729
20	49
21	703
22	1729
23	561
24	45
25	561
26	1891
27	105
28	1105
29	77
30	341
31	65
32	91
33	65
34	1729
35	1105
36	341
37	87
38	91
39	561
40	561
41	1105
42	85
43	91
44	561
45	105
46	111
47	561
48	703
49	2465
50	91
51	561
52	105
53	781
54	561
55	91

[9, 341, 91, 217, 1105, 25, 561, 15, 21, 561, 1541, 45, 45, 703, 645, 33, 561, 35, 1729, 49, 703, 1729, 561, 45, 561, 1891, 105, 1105, 77, 341, 65, 91, 65, 1729, 1105, 341, 87, 91, 561, 561, 1105, 85, 91, 561, 105, 111, 561, 703, 2465, 91, 561, 105, 781, 561, 91]

cp's OEIS Frontend

A098650 Smallest odd pseudoprime k > b to bases p_i, i.e., the smallest composite number k > b such that p_i^(k-1)-1 is divisible by k, p_i are the prime factors of b, where b is the n-th squarefree number, A005117(n).

Table of values

List of values