A336996 - cp's OEIS frontend

A336996 Triangle of coefficients T(n,k) (n >= 0, 0 <= k <= 2*n), read by rows: n-th row is obtained by expanding (2 + x + x^2)^n.

n	a(n)
0	1
1	2
2	1
3	1
4	4
5	4
6	5
7	2
8	1
9	8
10	12
11	18
12	13
13	9
14	3
15	1
16	16
17	32
18	56
19	56
20	49
21	28
22	14
23	4
24	1
25	32
26	80
27	160
28	200
29	210
30	161
31	105
32	50
33	20
34	5
35	1
36	64
37	192
38	432
39	640
40	780
41	732
42	581
43	366
44	195
45	80
46	27
47	6
48	1
49	128
50	448
51	1120
52	1904
53	2632
54	2884
55	2674
56	2045
57	1337
58	721
59	329
60	119
61	35
62	7
63	1

[1, 2, 1, 1, 4, 4, 5, 2, 1, 8, 12, 18, 13, 9, 3, 1, 16, 32, 56, 56, 49, 28, 14, 4, 1, 32, 80, 160, 200, 210, 161, 105, 50, 20, 5, 1, 64, 192, 432, 640, 780, 732, 581, 366, 195, 80, 27, 6, 1, 128, 448, 1120, 1904, 2632, 2884, 2674, 2045, 1337, 721, 329, 119, 35, 7, 1]

cp's OEIS Frontend

A336996 Triangle of coefficients T(n,k) (n >= 0, 0 <= k <= 2*n), read by rows: n-th row is obtained by expanding (2 + x + x^2)^n.

Table of values

List of values