A309020 - cp's OEIS frontend

A309020 Expansion of x * Product_{k>=0} (1 + x^(2^k) + x^(2^(k+1)) - x^(2^(k+2))).

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

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

cp's OEIS Frontend

A309020 Expansion of x * Product_{k>=0} (1 + x^(2^k) + x^(2^(k+1)) - x^(2^(k+2))).

Table of values

List of values

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

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

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