A056951 - cp's OEIS frontend

A056951 Triangle whose rows show the result of flipping the first, first two, ... and finally first n coins when starting with the stack (1,2,3,4,...,n) [starting with all heads up, where signs show whether particular coins end up heads or tails].

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

[-1, -2, 1, -3, -1, 2, -4, -2, 1, 3, -5, -3, -1, 2, 4, -6, -4, -2, 1, 3, 5, -7, -5, -3, -1, 2, 4, 6, -8, -6, -4, -2, 1, 3, 5, 7, -9, -7, -5, -3, -1, 2, 4, 6, 8, -10, -8, -6, -4, -2, 1, 3, 5, 7, 9, -11, -9, -7, -5, -3, -1, 2, 4, 6, 8, 10, -12, -10, -8, -6, -4, -2, 1, 3, 5, 7, 9, 11, -13, -11, -9, -7, -5, -3, -1, 2, 4, 6, 8, 10, 12, -14, -12, -10]

cp's OEIS Frontend

A056951 Triangle whose rows show the result of flipping the first, first two, ... and finally first n coins when starting with the stack (1,2,3,4,...,n) [starting with all heads up, where signs show whether particular coins end up heads or tails].

Table of values

List of values

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

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

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