A254575 - cp's OEIS frontend

A254575 Triangle T(n,k) in which the n-th row encodes how to hang a picture by wrapping rope around n nails using a polynomial number of twists, such that removing one nail causes the picture to fall; n>=1, 1<=k<=A073121(n).

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

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

cp's OEIS Frontend

A254575 Triangle T(n,k) in which the n-th row encodes how to hang a picture by wrapping rope around n nails using a polynomial number of twists, such that removing one nail causes the picture to fall; n>=1, 1<=k<=A073121(n).

Table of values

List of values

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

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

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