A322823 - cp's OEIS frontend

A322823 a(n) = 0 if n is 1 or a Fermi-Dirac prime (A050376), otherwise a(n) = 1 + a(A300840(n)).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	0
10	1
11	0
12	2
13	0
14	1
15	2
16	0
17	0
18	1
19	0
20	3
21	2
22	1
23	0
24	2
25	0
26	1
27	2
28	3
29	0
30	2
31	0
32	1
33	2
34	1
35	4
36	3
37	0
38	1
39	2
40	3
41	0
42	2
43	0
44	3
45	4
46	1
47	0
48	2
49	0
50	1
51	2
52	3
53	0
54	2
55	4
56	3
57	2
58	1
59	0
60	3
61	0
62	1
63	5
64	3
65	4
66	2
67	0
68	3
69	2
70	4
71	0
72	3
73	0
74	1
75	2
76	3
77	5
78	2
79	0
80	4
81	0
82	1
83	0
84	3
85	4
86	1
87	2
88	3
89	0
90	4
91	5
92	3
93	2
94	1
95	4
96	2
97	0
98	1
99	6
100	3
101	0
102	2
103	0
104	3
105	4

[0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 2, 0, 0, 1, 0, 3, 2, 1, 0, 2, 0, 1, 2, 3, 0, 2, 0, 1, 2, 1, 4, 3, 0, 1, 2, 3, 0, 2, 0, 3, 4, 1, 0, 2, 0, 1, 2, 3, 0, 2, 4, 3, 2, 1, 0, 3, 0, 1, 5, 3, 4, 2, 0, 3, 2, 4, 0, 3, 0, 1, 2, 3, 5, 2, 0, 4, 0, 1, 0, 3, 4, 1, 2, 3, 0, 4, 5, 3, 2, 1, 4, 2, 0, 1, 6, 3, 0, 2, 0, 3, 4]

cp's OEIS Frontend

A322823 a(n) = 0 if n is 1 or a Fermi-Dirac prime (A050376), otherwise a(n) = 1 + a(A300840(n)).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	0
10	1
11	0
12	2
13	0
14	1
15	2
16	0
17	0
18	1
19	0
20	3
21	2
22	1
23	0
24	2
25	0
26	1
27	2
28	3
29	0
30	2
31	0
32	1
33	2
34	1
35	4
36	3
37	0
38	1
39	2
40	3
41	0
42	2
43	0
44	3
45	4
46	1
47	0
48	2
49	0
50	1
51	2
52	3
53	0
54	2
55	4
56	3
57	2
58	1
59	0
60	3
61	0
62	1
63	5
64	3
65	4
66	2
67	0
68	3
69	2
70	4
71	0
72	3
73	0
74	1
75	2
76	3
77	5
78	2
79	0
80	4
81	0
82	1
83	0
84	3
85	4
86	1
87	2
88	3
89	0
90	4
91	5
92	3
93	2
94	1
95	4
96	2
97	0
98	1
99	6
100	3
101	0
102	2
103	0
104	3
105	4

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	0
10	1
11	0
12	2
13	0
14	1
15	2
16	0
17	0
18	1
19	0
20	3
21	2
22	1
23	0
24	2
25	0
26	1
27	2
28	3
29	0
30	2
31	0
32	1
33	2
34	1
35	4
36	3
37	0
38	1
39	2
40	3
41	0
42	2
43	0
44	3
45	4
46	1
47	0
48	2
49	0
50	1
51	2
52	3
53	0
54	2
55	4
56	3
57	2
58	1
59	0
60	3
61	0
62	1
63	5
64	3
65	4
66	2
67	0
68	3
69	2
70	4
71	0
72	3
73	0
74	1
75	2
76	3
77	5
78	2
79	0
80	4
81	0
82	1
83	0
84	3
85	4
86	1
87	2
88	3
89	0
90	4
91	5
92	3
93	2
94	1
95	4
96	2
97	0
98	1
99	6
100	3
101	0
102	2
103	0
104	3
105	4

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	0
10	1
11	0
12	2
13	0
14	1
15	2
16	0
17	0
18	1
19	0
20	3
21	2
22	1
23	0
24	2
25	0
26	1
27	2
28	3
29	0
30	2
31	0
32	1
33	2
34	1
35	4
36	3
37	0
38	1
39	2
40	3
41	0
42	2
43	0
44	3
45	4
46	1
47	0
48	2
49	0
50	1
51	2
52	3
53	0
54	2
55	4
56	3
57	2
58	1
59	0
60	3
61	0
62	1
63	5
64	3
65	4
66	2
67	0
68	3
69	2
70	4
71	0
72	3
73	0
74	1
75	2
76	3
77	5
78	2
79	0
80	4
81	0
82	1
83	0
84	3
85	4
86	1
87	2
88	3
89	0
90	4
91	5
92	3
93	2
94	1
95	4
96	2
97	0
98	1
99	6
100	3
101	0
102	2
103	0
104	3
105	4