A084604 - cp's OEIS frontend

A084604 Triangle, read by rows, where the n-th row lists the (2n+1) coefficients of (1 + x + 4x^2)^n.

n	a(n)
0	1
1	1
2	1
3	4
4	1
5	2
6	9
7	8
8	16
9	1
10	3
11	15
12	25
13	60
14	48
15	64
16	1
17	4
18	22
19	52
20	145
21	208
22	352
23	256
24	256
25	1
26	5
27	30
28	90
29	285
30	561
31	1140
32	1440
33	1920
34	1280
35	1024
36	1
37	6
38	39
39	140
40	495
41	1206
42	2841
43	4824
44	7920
45	8960
46	9984
47	6144
48	4096
49	1
50	7
51	49
52	203
53	791
54	2261
55	6027
56	12489
57	24108
58	36176

[1, 1, 1, 4, 1, 2, 9, 8, 16, 1, 3, 15, 25, 60, 48, 64, 1, 4, 22, 52, 145, 208, 352, 256, 256, 1, 5, 30, 90, 285, 561, 1140, 1440, 1920, 1280, 1024, 1, 6, 39, 140, 495, 1206, 2841, 4824, 7920, 8960, 9984, 6144, 4096, 1, 7, 49, 203, 791, 2261, 6027, 12489, 24108, 36176]

cp's OEIS Frontend

A084604 Triangle, read by rows, where the n-th row lists the (2n+1) coefficients of (1 + x + 4x^2)^n.

Table of values

List of values