A080928 - cp's OEIS frontend

A080928 Triangle T(n,k) read by rows: T(n,k) = Sum_{i=0..n} C(n,2i)*C(2i,k).

n	a(n)
0	1
1	1
2	0
3	2
4	2
5	1
6	4
7	6
8	3
9	0
10	8
11	16
12	12
13	4
14	1
15	16
16	40
17	40
18	20
19	5
20	0
21	32
22	96
23	120
24	80
25	30
26	6
27	1
28	64
29	224
30	336
31	280
32	140
33	42
34	7
35	0
36	128
37	512
38	896
39	896
40	560
41	224
42	56
43	8
44	1
45	256
46	1152
47	2304
48	2688
49	2016
50	1008
51	336
52	72
53	9
54	0
55	512
56	2560
57	5760
58	7680
59	6720
60	4032
61	1680
62	480
63	90
64	10

[1, 1, 0, 2, 2, 1, 4, 6, 3, 0, 8, 16, 12, 4, 1, 16, 40, 40, 20, 5, 0, 32, 96, 120, 80, 30, 6, 1, 64, 224, 336, 280, 140, 42, 7, 0, 128, 512, 896, 896, 560, 224, 56, 8, 1, 256, 1152, 2304, 2688, 2016, 1008, 336, 72, 9, 0, 512, 2560, 5760, 7680, 6720, 4032, 1680, 480, 90, 10]

cp's OEIS Frontend

A080928 Triangle T(n,k) read by rows: T(n,k) = Sum_{i=0..n} C(n,2i)*C(2i,k).

Table of values

List of values