A122888 - cp's OEIS frontend

A122888 Triangle, read by rows, where row n lists the coefficients of x^k, k=1..2^n, in the n-th iteration of (x + x^2) for n>=0.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	1
7	1
8	3
9	6
10	9
11	10
12	8
13	4
14	1
15	1
16	4
17	12
18	30
19	64
20	118
21	188
22	258
23	302
24	298
25	244
26	162
27	84
28	32
29	8
30	1
31	1
32	5
33	20
34	70
35	220
36	630
37	1656
38	4014
39	8994
40	18654
41	35832
42	63750
43	105024
44	160120
45	225696
46	293685
47	352074
48	387820
49	391232
50	359992
51	300664
52	226580

[1, 1, 1, 1, 2, 2, 1, 1, 3, 6, 9, 10, 8, 4, 1, 1, 4, 12, 30, 64, 118, 188, 258, 302, 298, 244, 162, 84, 32, 8, 1, 1, 5, 20, 70, 220, 630, 1656, 4014, 8994, 18654, 35832, 63750, 105024, 160120, 225696, 293685, 352074, 387820, 391232, 359992, 300664, 226580]

cp's OEIS Frontend

A122888 Triangle, read by rows, where row n lists the coefficients of x^k, k=1..2^n, in the n-th iteration of (x + x^2) for n>=0.

Table of values

List of values