A166900 - cp's OEIS frontend

A166900 Triangle, read by rows, that transforms rows into diagonals in the table of coefficients of successive iterations of x+x^2 (cf. A122888).

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	1
6	9
7	21
8	9
9	1
10	64
11	156
12	84
13	16
14	1
15	630
16	1540
17	935
18	230
19	25
20	1
21	7916
22	19160
23	12480
24	3564
25	510
26	36
27	1
28	121023
29	288813
30	196623
31	61845
32	10465
33	987
34	49
35	1
36	2179556
37	5123608
38	3591560
39	1207696
40	228800
41	25864
42	1736
43	64
44	1
45	45179508
46	104657520

[1, 1, 1, 2, 4, 1, 9, 21, 9, 1, 64, 156, 84, 16, 1, 630, 1540, 935, 230, 25, 1, 7916, 19160, 12480, 3564, 510, 36, 1, 121023, 288813, 196623, 61845, 10465, 987, 49, 1, 2179556, 5123608, 3591560, 1207696, 228800, 25864, 1736, 64, 1, 45179508, 104657520]

cp's OEIS Frontend

A166900 Triangle, read by rows, that transforms rows into diagonals in the table of coefficients of successive iterations of x+x^2 (cf. A122888).

Table of values

List of values