A382605 - cp's OEIS frontend

A382605 Number of distinct solutions to the problem of folding in half a chain of linked rods of length 1, ..., n.

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

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

cp's OEIS Frontend

A382605 Number of distinct solutions to the problem of folding in half a chain of linked rods of length 1, ..., n.

Table of values

List of values

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

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

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