A290884 - cp's OEIS frontend

A290884 Let S be the sequence generated by these rules: 0 is in S, and if z is in S, then z * (1+i) and (z-1) * (1+i) + 1 are in S (where i denotes the imaginary unit), and duplicates are deleted as they occur; a(n) = the real part of the n-th term of S.

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	3
8	3
9	2
10	2
11	3
12	3
13	4
14	4
15	5
16	5
17	0
18	0
19	1
20	1
21	2
22	2
23	3
24	3
25	2
26	2
27	3
28	3
29	4
30	4
31	5
32	5
33	-4
34	-4
35	-3
36	-3
37	-2
38	-2
39	-1
40	-1
41	-2
42	-2
43	-1
44	-1
45	0
46	0
47	1
48	1
49	-4
50	-4
51	-3
52	-3
53	-2
54	-2
55	-1
56	-1
57	-2
58	-2
59	-1
60	-1
61	0
62	0
63	1
64	1
65	-8
66	-8
67	-7
68	-7
69	-6
70	-6
71	-5
72	-5
73	-6
74	-6
75	-5

[0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3, 4, 4, 5, 5, 0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3, 4, 4, 5, 5, -4, -4, -3, -3, -2, -2, -1, -1, -2, -2, -1, -1, 0, 0, 1, 1, -4, -4, -3, -3, -2, -2, -1, -1, -2, -2, -1, -1, 0, 0, 1, 1, -8, -8, -7, -7, -6, -6, -5, -5, -6, -6, -5]

cp's OEIS Frontend

A290884 Let S be the sequence generated by these rules: 0 is in S, and if z is in S, then z * (1+i) and (z-1) * (1+i) + 1 are in S (where i denotes the imaginary unit), and duplicates are deleted as they occur; a(n) = the real part of the n-th term of S.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	3
8	3
9	2
10	2
11	3
12	3
13	4
14	4
15	5
16	5
17	0
18	0
19	1
20	1
21	2
22	2
23	3
24	3
25	2
26	2
27	3
28	3
29	4
30	4
31	5
32	5
33	-4
34	-4
35	-3
36	-3
37	-2
38	-2
39	-1
40	-1
41	-2
42	-2
43	-1
44	-1
45	0
46	0
47	1
48	1
49	-4
50	-4
51	-3
52	-3
53	-2
54	-2
55	-1
56	-1
57	-2
58	-2
59	-1
60	-1
61	0
62	0
63	1
64	1
65	-8
66	-8
67	-7
68	-7
69	-6
70	-6
71	-5
72	-5
73	-6
74	-6
75	-5

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	3
8	3
9	2
10	2
11	3
12	3
13	4
14	4
15	5
16	5
17	0
18	0
19	1
20	1
21	2
22	2
23	3
24	3
25	2
26	2
27	3
28	3
29	4
30	4
31	5
32	5
33	-4
34	-4
35	-3
36	-3
37	-2
38	-2
39	-1
40	-1
41	-2
42	-2
43	-1
44	-1
45	0
46	0
47	1
48	1
49	-4
50	-4
51	-3
52	-3
53	-2
54	-2
55	-1
56	-1
57	-2
58	-2
59	-1
60	-1
61	0
62	0
63	1
64	1
65	-8
66	-8
67	-7
68	-7
69	-6
70	-6
71	-5
72	-5
73	-6
74	-6
75	-5

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	2
7	3
8	3
9	2
10	2
11	3
12	3
13	4
14	4
15	5
16	5
17	0
18	0
19	1
20	1
21	2
22	2
23	3
24	3
25	2
26	2
27	3
28	3
29	4
30	4
31	5
32	5
33	-4
34	-4
35	-3
36	-3
37	-2
38	-2
39	-1
40	-1
41	-2
42	-2
43	-1
44	-1
45	0
46	0
47	1
48	1
49	-4
50	-4
51	-3
52	-3
53	-2
54	-2
55	-1
56	-1
57	-2
58	-2
59	-1
60	-1
61	0
62	0
63	1
64	1
65	-8
66	-8
67	-7
68	-7
69	-6
70	-6
71	-5
72	-5
73	-6
74	-6
75	-5