A184879 - cp's OEIS frontend

A184879 Triangular array T read by rows: T(n, k) = Sum_{i=0..2n-2k} binomial(2n-2k, i)binomial(2k, i)*(-1)^i, 0 <= k <= n.

n	a(n)
0	1
1	1
2	1
3	1
4	-2
5	1
6	1
7	-1
8	-1
9	1
10	1
11	4
12	6
13	4
14	1
15	1
16	13
17	2
18	2
19	13
20	1
21	1
22	26
23	-17
24	-20
25	-17
26	26
27	1
28	1
29	43
30	-39
31	-5
32	-5
33	-39
34	43
35	1
36	1
37	64
38	-36
39	64
40	70
41	64
42	-36
43	64
44	1
45	1
46	89
47	36
48	116
49	14
50	14
51	116
52	36
53	89
54	1
55	1
56	118
57	237
58	8
59	-238
60	-252
61	-238
62	8
63	237
64	118
65	1
66	1
67	151
68	643
69	-395
70	-358

[1, 1, 1, 1, -2, 1, 1, -1, -1, 1, 1, 4, 6, 4, 1, 1, 13, 2, 2, 13, 1, 1, 26, -17, -20, -17, 26, 1, 1, 43, -39, -5, -5, -39, 43, 1, 1, 64, -36, 64, 70, 64, -36, 64, 1, 1, 89, 36, 116, 14, 14, 116, 36, 89, 1, 1, 118, 237, 8, -238, -252, -238, 8, 237, 118, 1, 1, 151, 643, -395, -358]

cp's OEIS Frontend

A184879 Triangular array T read by rows: T(n, k) = Sum_{i=0..2n-2k} binomial(2n-2k, i)binomial(2k, i)*(-1)^i, 0 <= k <= n.

Table of values

List of values

cp's OEIS Frontend

A184879 Triangular array T read by rows: T(n, k) = Sum_{i=0..2*n-2*k} binomial(2*n-2*k, i)*binomial(2*k, i)*(-1)^i, 0 <= k <= n.

Table of values

List of values

A184879 Triangular array T read by rows: T(n, k) = Sum_{i=0..2n-2k} binomial(2n-2k, i)binomial(2k, i)*(-1)^i, 0 <= k <= n.