A131851 - cp's OEIS frontend

A131851 Real part of the function z(n)=Sum(d(k)i^k: d as in n=Sum(d(k)2^k), i=sqrt(-1)).

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

[0, 1, 0, 1, -1, 0, -1, 0, 0, 1, 0, 1, -1, 0, -1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 1, 2, 1, 2, 0, 1, 0, 1, 0, 1, 0, 1, -1, 0, -1, 0, 0, 1, 0, 1, -1, 0, -1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 1, 2, 1, 2, 0, 1, 0, 1, -1, 0, -1, 0, -2, -1, -2, -1, -1, 0, -1, 0, -2, -1, -2, -1, 0, 1, 0, 1, -1, 0, -1, 0, 0, 1, 0, 1, -1, 0, -1, 0, -1, 0, -1, 0, -2, -1, -2, -1, -1, 0, -1, 0, -2, -1, -2]

cp's OEIS Frontend

A131851 Real part of the function z(n)=Sum(d(k)i^k: d as in n=Sum(d(k)2^k), i=sqrt(-1)).

Table of values

List of values

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

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

cp's OEIS Frontend

A131851 Real part of the function z(n)=Sum(d(k)*i^k: d as in n=Sum(d(k)*2^k), i=sqrt(-1)).

Table of values

List of values

A131851 Real part of the function z(n)=Sum(d(k)i^k: d as in n=Sum(d(k)2^k), i=sqrt(-1)).

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