A166884 - cp's OEIS frontend

A166884 Triangle, read by rows, that transforms diagonals in the table of coefficients of successive iterations of x+x^2+x^3 (cf. A166880).

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	1
6	15
7	9
8	3
9	1
10	114
11	62
12	18
13	4
14	1
15	1159
16	593
17	157
18	30
19	5
20	1
21	14838
22	7266
23	1812
24	316
25	45
26	6
27	1
28	229401
29	108720
30	25989
31	4271
32	555
33	63
34	7
35	1
36	4159662
37	1922166
38	445255
39	70180
40	8595
41	890
42	84
43	8
44	1
45	86580636
46	39212154
47	8865333
48	1354750
49	159171
50	15534
51	1337
52	108
53	9
54	1

[1, 1, 1, 3, 2, 1, 15, 9, 3, 1, 114, 62, 18, 4, 1, 1159, 593, 157, 30, 5, 1, 14838, 7266, 1812, 316, 45, 6, 1, 229401, 108720, 25989, 4271, 555, 63, 7, 1, 4159662, 1922166, 445255, 70180, 8595, 890, 84, 8, 1, 86580636, 39212154, 8865333, 1354750, 159171, 15534, 1337, 108, 9, 1]

cp's OEIS Frontend

A166884 Triangle, read by rows, that transforms diagonals in the table of coefficients of successive iterations of x+x^2+x^3 (cf. A166880).

Table of values

List of values