A156609 - cp's OEIS frontend

A156609 Triangle T(n, k, m) = round( t(n,m)/(t(k,m)*t(n-k,m)) ), with T(0, k, m) = 1, where t(n, k) = Product_{j=1..n} A129862(k+1, j), t(n, 0) = n!, and m = 3, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	-2
5	1
6	1
7	4
8	4
9	1
10	1
11	-4
12	8
13	-4
14	1
15	1
16	4
17	8
18	8
19	4
20	1
21	1
22	-4
23	8
24	-8
25	8
26	-4
27	1
28	1
29	4
30	8
31	8
32	8
33	8
34	4
35	1
36	1
37	-4
38	8
39	-8
40	8
41	-8
42	8
43	-4
44	1
45	1
46	4
47	8
48	8
49	8
50	8
51	8
52	8
53	4
54	1
55	1
56	-4
57	8
58	-8
59	8
60	-8
61	8
62	-8
63	8
64	-4
65	1

[1, 1, 1, 1, -2, 1, 1, 4, 4, 1, 1, -4, 8, -4, 1, 1, 4, 8, 8, 4, 1, 1, -4, 8, -8, 8, -4, 1, 1, 4, 8, 8, 8, 8, 4, 1, 1, -4, 8, -8, 8, -8, 8, -4, 1, 1, 4, 8, 8, 8, 8, 8, 8, 4, 1, 1, -4, 8, -8, 8, -8, 8, -8, 8, -4, 1]

cp's OEIS Frontend

A156609 Triangle T(n, k, m) = round( t(n,m)/(t(k,m)*t(n-k,m)) ), with T(0, k, m) = 1, where t(n, k) = Product_{j=1..n} A129862(k+1, j), t(n, 0) = n!, and m = 3, read by rows.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	-2
5	1
6	1
7	4
8	4
9	1
10	1
11	-4
12	8
13	-4
14	1
15	1
16	4
17	8
18	8
19	4
20	1
21	1
22	-4
23	8
24	-8
25	8
26	-4
27	1
28	1
29	4
30	8
31	8
32	8
33	8
34	4
35	1
36	1
37	-4
38	8
39	-8
40	8
41	-8
42	8
43	-4
44	1
45	1
46	4
47	8
48	8
49	8
50	8
51	8
52	8
53	4
54	1
55	1
56	-4
57	8
58	-8
59	8
60	-8
61	8
62	-8
63	8
64	-4
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	-2
5	1
6	1
7	4
8	4
9	1
10	1
11	-4
12	8
13	-4
14	1
15	1
16	4
17	8
18	8
19	4
20	1
21	1
22	-4
23	8
24	-8
25	8
26	-4
27	1
28	1
29	4
30	8
31	8
32	8
33	8
34	4
35	1
36	1
37	-4
38	8
39	-8
40	8
41	-8
42	8
43	-4
44	1
45	1
46	4
47	8
48	8
49	8
50	8
51	8
52	8
53	4
54	1
55	1
56	-4
57	8
58	-8
59	8
60	-8
61	8
62	-8
63	8
64	-4
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	-2
5	1
6	1
7	4
8	4
9	1
10	1
11	-4
12	8
13	-4
14	1
15	1
16	4
17	8
18	8
19	4
20	1
21	1
22	-4
23	8
24	-8
25	8
26	-4
27	1
28	1
29	4
30	8
31	8
32	8
33	8
34	4
35	1
36	1
37	-4
38	8
39	-8
40	8
41	-8
42	8
43	-4
44	1
45	1
46	4
47	8
48	8
49	8
50	8
51	8
52	8
53	4
54	1
55	1
56	-4
57	8
58	-8
59	8
60	-8
61	8
62	-8
63	8
64	-4
65	1