A232243 - cp's OEIS frontend

A232243 a(n) = wt(n^2) - wt(n), where wt(n) = A000120(n) is the binary weight function.

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

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

cp's OEIS Frontend

A232243 a(n) = wt(n^2) - wt(n), where wt(n) = A000120(n) is the binary weight function.

Table of values

List of values

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

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

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