A348921 - cp's OEIS frontend

A348921 a(n) is the "w" part of f(n) = Sum_{k >= 0} g(d_k) * (4 + w)^k where g(0) = 0 and g(1 + u + 2v) = (1 + u) (1 + w)^v for any u = 0..1 and v = 0..5, Sum_{k >= 0} d_k * 13^k is the base-13 representation of n and w = -1/2 + sqrt(-3)/2 is a primitive cube root of unity; sequence A348920 gives "real" parts.

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

[0, 0, 0, 1, 2, 1, 2, 0, 0, -1, -2, -1, -2, 1, 1, 1, 2, 3, 2, 3, 1, 1, 0, -1, 0, -1, 2, 2, 2, 3, 4, 3, 4, 2, 2, 1, 0, 1, 0, 4, 4, 4, 5, 6, 5, 6, 4, 4, 3, 2, 3, 2, 8, 8, 8, 9, 10, 9, 10, 8, 8, 7, 6, 7, 6, 3, 3, 3, 4, 5, 4, 5, 3, 3, 2, 1, 2, 1, 6, 6, 6, 7, 8, 7]

cp's OEIS Frontend

Table of values

List of values

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

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

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