A336121 - cp's OEIS frontend

A336121 a(1) = 0, and for n > 1, a(n) = [A122111(n) == 3 (mod 4)] + a(A253553(n)).

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

[0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 2, 0, 1, 0, 1, 0, 2, 1, 1, 0, 1, 0, 2, 0, 3, 0, 1, 1, 1, 0, 1, 0, 2, 0, 2, 0, 1, 0, 1, 0, 3, 0, 1, 0, 1, 0, 3, 1, 2, 0, 1, 0, 1, 0, 1, 0, 3, 1, 2, 0, 1, 0, 1, 0, 2, 0, 1, 1, 1, 0, 2, 0, 3, 0, 1, 0, 1, 1, 1, 0, 2, 0, 3, 0, 1, 0, 1, 1, 3, 0, 2, 0, 2, 0, 2, 0, 2, 1]

cp's OEIS Frontend

A336121 a(1) = 0, and for n > 1, a(n) = [A122111(n) == 3 (mod 4)] + a(A253553(n)).

Table of values

List of values

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

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

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