A283978 - cp's OEIS frontend

A283978 a(2n) = 0, a(2n+1) = A002487(n) AND A002487(n+1), where AND is bitwise-and (A004198).

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	2
12	0
13	2
14	0
15	1
16	0
17	0
18	0
19	0
20	0
21	1
22	0
23	0
24	0
25	0
26	0
27	1
28	0
29	0
30	0
31	0
32	0
33	1
34	0
35	4
36	0
37	4
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	5
46	0
47	2
48	0
49	2
50	0
51	5
52	0
53	0
54	0
55	0
56	0
57	3
58	0
59	4
60	0
61	4
62	0
63	1
64	0
65	0
66	0
67	4
68	0
69	1
70	0
71	0
72	0
73	0
74	0
75	3
76	0
77	2
78	0
79	2
80	0
81	3
82	0
83	8
84	0
85	8
86	0
87	5
88	0
89	4
90	0
91	4
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	1
100	0
101	4
102	0
103	4
104	0
105	5
106	0
107	8
108	0
109	8
110	0
111	3
112	0
113	2
114	0
115	2
116	0
117	3
118	0
119	0
120	0

[0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 2, 0, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 4, 0, 4, 0, 3, 0, 0, 0, 0, 0, 5, 0, 2, 0, 2, 0, 5, 0, 0, 0, 0, 0, 3, 0, 4, 0, 4, 0, 1, 0, 0, 0, 4, 0, 1, 0, 0, 0, 0, 0, 3, 0, 2, 0, 2, 0, 3, 0, 8, 0, 8, 0, 5, 0, 4, 0, 4, 0, 1, 0, 0, 0, 0, 0, 1, 0, 4, 0, 4, 0, 5, 0, 8, 0, 8, 0, 3, 0, 2, 0, 2, 0, 3, 0, 0, 0]

cp's OEIS Frontend

A283978 a(2n) = 0, a(2n+1) = A002487(n) AND A002487(n+1), where AND is bitwise-and (A004198).

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	2
12	0
13	2
14	0
15	1
16	0
17	0
18	0
19	0
20	0
21	1
22	0
23	0
24	0
25	0
26	0
27	1
28	0
29	0
30	0
31	0
32	0
33	1
34	0
35	4
36	0
37	4
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	5
46	0
47	2
48	0
49	2
50	0
51	5
52	0
53	0
54	0
55	0
56	0
57	3
58	0
59	4
60	0
61	4
62	0
63	1
64	0
65	0
66	0
67	4
68	0
69	1
70	0
71	0
72	0
73	0
74	0
75	3
76	0
77	2
78	0
79	2
80	0
81	3
82	0
83	8
84	0
85	8
86	0
87	5
88	0
89	4
90	0
91	4
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	1
100	0
101	4
102	0
103	4
104	0
105	5
106	0
107	8
108	0
109	8
110	0
111	3
112	0
113	2
114	0
115	2
116	0
117	3
118	0
119	0
120	0

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	2
12	0
13	2
14	0
15	1
16	0
17	0
18	0
19	0
20	0
21	1
22	0
23	0
24	0
25	0
26	0
27	1
28	0
29	0
30	0
31	0
32	0
33	1
34	0
35	4
36	0
37	4
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	5
46	0
47	2
48	0
49	2
50	0
51	5
52	0
53	0
54	0
55	0
56	0
57	3
58	0
59	4
60	0
61	4
62	0
63	1
64	0
65	0
66	0
67	4
68	0
69	1
70	0
71	0
72	0
73	0
74	0
75	3
76	0
77	2
78	0
79	2
80	0
81	3
82	0
83	8
84	0
85	8
86	0
87	5
88	0
89	4
90	0
91	4
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	1
100	0
101	4
102	0
103	4
104	0
105	5
106	0
107	8
108	0
109	8
110	0
111	3
112	0
113	2
114	0
115	2
116	0
117	3
118	0
119	0
120	0

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	2
12	0
13	2
14	0
15	1
16	0
17	0
18	0
19	0
20	0
21	1
22	0
23	0
24	0
25	0
26	0
27	1
28	0
29	0
30	0
31	0
32	0
33	1
34	0
35	4
36	0
37	4
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	5
46	0
47	2
48	0
49	2
50	0
51	5
52	0
53	0
54	0
55	0
56	0
57	3
58	0
59	4
60	0
61	4
62	0
63	1
64	0
65	0
66	0
67	4
68	0
69	1
70	0
71	0
72	0
73	0
74	0
75	3
76	0
77	2
78	0
79	2
80	0
81	3
82	0
83	8
84	0
85	8
86	0
87	5
88	0
89	4
90	0
91	4
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	1
100	0
101	4
102	0
103	4
104	0
105	5
106	0
107	8
108	0
109	8
110	0
111	3
112	0
113	2
114	0
115	2
116	0
117	3
118	0
119	0
120	0