A249147 - cp's OEIS frontend

A249147 a(n) = 0 if A249148(n) = 1, otherwise the index of the least prime dividing A249148(n): a(n) = A055396(A249148(n)).

n	a(n)
1	0
2	1
3	0
4	2
5	0
6	1
7	2
8	1
9	1
10	1
11	4
12	0
13	3
14	0
15	1
16	1
17	5
18	0
19	4
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	9
29	0
30	1
31	1
32	2
33	1
34	1
35	1
36	11
37	0
38	2
39	6
40	1
41	1
42	12
43	0
44	1
45	1
46	2
47	1
48	1
49	14
50	0
51	5
52	2
53	2
54	1
55	15
56	0
57	1
58	4
59	4
60	1
61	1
62	1
63	3
64	2
65	1
66	1
67	17
68	0
69	6
70	3
71	1
72	1
73	1
74	2
75	3
76	1
77	1
78	1
79	20
80	0
81	1
82	1
83	2
84	1
85	4
86	2
87	10
88	0
89	2
90	1
91	1
92	22
93	0
94	1
95	23
96	0
97	7

[0, 1, 0, 2, 0, 1, 2, 1, 1, 1, 4, 0, 3, 0, 1, 1, 5, 0, 4, 1, 1, 1, 2, 1, 1, 1, 1, 9, 0, 1, 1, 2, 1, 1, 1, 11, 0, 2, 6, 1, 1, 12, 0, 1, 1, 2, 1, 1, 14, 0, 5, 2, 2, 1, 15, 0, 1, 4, 4, 1, 1, 1, 3, 2, 1, 1, 17, 0, 6, 3, 1, 1, 1, 2, 3, 1, 1, 1, 20, 0, 1, 1, 2, 1, 4, 2, 10, 0, 2, 1, 1, 22, 0, 1, 23, 0, 7]

cp's OEIS Frontend

A249147 a(n) = 0 if A249148(n) = 1, otherwise the index of the least prime dividing A249148(n): a(n) = A055396(A249148(n)).

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	2
5	0
6	1
7	2
8	1
9	1
10	1
11	4
12	0
13	3
14	0
15	1
16	1
17	5
18	0
19	4
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	9
29	0
30	1
31	1
32	2
33	1
34	1
35	1
36	11
37	0
38	2
39	6
40	1
41	1
42	12
43	0
44	1
45	1
46	2
47	1
48	1
49	14
50	0
51	5
52	2
53	2
54	1
55	15
56	0
57	1
58	4
59	4
60	1
61	1
62	1
63	3
64	2
65	1
66	1
67	17
68	0
69	6
70	3
71	1
72	1
73	1
74	2
75	3
76	1
77	1
78	1
79	20
80	0
81	1
82	1
83	2
84	1
85	4
86	2
87	10
88	0
89	2
90	1
91	1
92	22
93	0
94	1
95	23
96	0
97	7

n	a(n)
1	0
2	1
3	0
4	2
5	0
6	1
7	2
8	1
9	1
10	1
11	4
12	0
13	3
14	0
15	1
16	1
17	5
18	0
19	4
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	9
29	0
30	1
31	1
32	2
33	1
34	1
35	1
36	11
37	0
38	2
39	6
40	1
41	1
42	12
43	0
44	1
45	1
46	2
47	1
48	1
49	14
50	0
51	5
52	2
53	2
54	1
55	15
56	0
57	1
58	4
59	4
60	1
61	1
62	1
63	3
64	2
65	1
66	1
67	17
68	0
69	6
70	3
71	1
72	1
73	1
74	2
75	3
76	1
77	1
78	1
79	20
80	0
81	1
82	1
83	2
84	1
85	4
86	2
87	10
88	0
89	2
90	1
91	1
92	22
93	0
94	1
95	23
96	0
97	7

n	a(n)
1	0
2	1
3	0
4	2
5	0
6	1
7	2
8	1
9	1
10	1
11	4
12	0
13	3
14	0
15	1
16	1
17	5
18	0
19	4
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	9
29	0
30	1
31	1
32	2
33	1
34	1
35	1
36	11
37	0
38	2
39	6
40	1
41	1
42	12
43	0
44	1
45	1
46	2
47	1
48	1
49	14
50	0
51	5
52	2
53	2
54	1
55	15
56	0
57	1
58	4
59	4
60	1
61	1
62	1
63	3
64	2
65	1
66	1
67	17
68	0
69	6
70	3
71	1
72	1
73	1
74	2
75	3
76	1
77	1
78	1
79	20
80	0
81	1
82	1
83	2
84	1
85	4
86	2
87	10
88	0
89	2
90	1
91	1
92	22
93	0
94	1
95	23
96	0
97	7