A361503 - cp's OEIS frontend

A361503 a(1)=2; thereafter a(n) = smallest prime that does not divide b(n-1)*b(n), where b(k) = A359804(k).

n	a(n)
1	2
2	3
3	5
4	2
5	3
6	5
7	7
8	3
9	2
10	5
11	7
12	11
13	3
14	5
15	7
16	11
17	5
18	3
19	7
20	5
21	11
22	7
23	2
24	3
25	5
26	7
27	11
28	5
29	7
30	2
31	3
32	5
33	7
34	3
35	5
36	7
37	2
38	5
39	7
40	11
41	13
42	5
43	2
44	3
45	5
46	2
47	7
48	3
49	5
50	7
51	11
52	5
53	3
54	2
55	5
56	7
57	11
58	2
59	5
60	3
61	7
62	5
63	3
64	7
65	2
66	11
67	3
68	7
69	5
70	3
71	7
72	5
73	11
74	7
75	5
76	11
77	7
78	5
79	3
80	7
81	11
82	3
83	2
84	5
85	7
86	2
87	5
88	3
89	2
90	5
91	7
92	13
93	3
94	5
95	2
96	3

[2, 3, 5, 2, 3, 5, 7, 3, 2, 5, 7, 11, 3, 5, 7, 11, 5, 3, 7, 5, 11, 7, 2, 3, 5, 7, 11, 5, 7, 2, 3, 5, 7, 3, 5, 7, 2, 5, 7, 11, 13, 5, 2, 3, 5, 2, 7, 3, 5, 7, 11, 5, 3, 2, 5, 7, 11, 2, 5, 3, 7, 5, 3, 7, 2, 11, 3, 7, 5, 3, 7, 5, 11, 7, 5, 11, 7, 5, 3, 7, 11, 3, 2, 5, 7, 2, 5, 3, 2, 5, 7, 13, 3, 5, 2, 3]

cp's OEIS Frontend

A361503 a(1)=2; thereafter a(n) = smallest prime that does not divide b(n-1)*b(n), where b(k) = A359804(k).

Table of values

List of values

n	a(n)
1	2
2	3
3	5
4	2
5	3
6	5
7	7
8	3
9	2
10	5
11	7
12	11
13	3
14	5
15	7
16	11
17	5
18	3
19	7
20	5
21	11
22	7
23	2
24	3
25	5
26	7
27	11
28	5
29	7
30	2
31	3
32	5
33	7
34	3
35	5
36	7
37	2
38	5
39	7
40	11
41	13
42	5
43	2
44	3
45	5
46	2
47	7
48	3
49	5
50	7
51	11
52	5
53	3
54	2
55	5
56	7
57	11
58	2
59	5
60	3
61	7
62	5
63	3
64	7
65	2
66	11
67	3
68	7
69	5
70	3
71	7
72	5
73	11
74	7
75	5
76	11
77	7
78	5
79	3
80	7
81	11
82	3
83	2
84	5
85	7
86	2
87	5
88	3
89	2
90	5
91	7
92	13
93	3
94	5
95	2
96	3

n	a(n)
1	2
2	3
3	5
4	2
5	3
6	5
7	7
8	3
9	2
10	5
11	7
12	11
13	3
14	5
15	7
16	11
17	5
18	3
19	7
20	5
21	11
22	7
23	2
24	3
25	5
26	7
27	11
28	5
29	7
30	2
31	3
32	5
33	7
34	3
35	5
36	7
37	2
38	5
39	7
40	11
41	13
42	5
43	2
44	3
45	5
46	2
47	7
48	3
49	5
50	7
51	11
52	5
53	3
54	2
55	5
56	7
57	11
58	2
59	5
60	3
61	7
62	5
63	3
64	7
65	2
66	11
67	3
68	7
69	5
70	3
71	7
72	5
73	11
74	7
75	5
76	11
77	7
78	5
79	3
80	7
81	11
82	3
83	2
84	5
85	7
86	2
87	5
88	3
89	2
90	5
91	7
92	13
93	3
94	5
95	2
96	3

n	a(n)
1	2
2	3
3	5
4	2
5	3
6	5
7	7
8	3
9	2
10	5
11	7
12	11
13	3
14	5
15	7
16	11
17	5
18	3
19	7
20	5
21	11
22	7
23	2
24	3
25	5
26	7
27	11
28	5
29	7
30	2
31	3
32	5
33	7
34	3
35	5
36	7
37	2
38	5
39	7
40	11
41	13
42	5
43	2
44	3
45	5
46	2
47	7
48	3
49	5
50	7
51	11
52	5
53	3
54	2
55	5
56	7
57	11
58	2
59	5
60	3
61	7
62	5
63	3
64	7
65	2
66	11
67	3
68	7
69	5
70	3
71	7
72	5
73	11
74	7
75	5
76	11
77	7
78	5
79	3
80	7
81	11
82	3
83	2
84	5
85	7
86	2
87	5
88	3
89	2
90	5
91	7
92	13
93	3
94	5
95	2
96	3