A158825 - cp's OEIS frontend

A158825 Square array of coefficients in the successive iterations of xC(x) = (1-sqrt(1-4x))/2 where C(x) is the g.f. of the Catalan numbers (A000108); read by antidiagonals.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	2
7	1
8	3
9	6
10	5
11	1
12	4
13	12
14	21
15	14
16	1
17	5
18	20
19	54
20	80
21	42
22	1
23	6
24	30
25	110
26	260
27	322
28	132
29	1
30	7
31	42
32	195
33	640
34	1310
35	1348
36	429
37	1
38	8
39	56
40	315
41	1330
42	3870
43	6824
44	5814
45	1430
46	1
47	9
48	72
49	476
50	2464
51	9380
52	24084
53	36478
54	25674
55	4862
56	1
57	10
58	90
59	684
60	4200
61	19852
62	67844
63	153306
64	199094
65	115566
66	16796

[1, 1, 1, 1, 2, 2, 1, 3, 6, 5, 1, 4, 12, 21, 14, 1, 5, 20, 54, 80, 42, 1, 6, 30, 110, 260, 322, 132, 1, 7, 42, 195, 640, 1310, 1348, 429, 1, 8, 56, 315, 1330, 3870, 6824, 5814, 1430, 1, 9, 72, 476, 2464, 9380, 24084, 36478, 25674, 4862, 1, 10, 90, 684, 4200, 19852, 67844, 153306, 199094, 115566, 16796]

cp's OEIS Frontend

A158825 Square array of coefficients in the successive iterations of xC(x) = (1-sqrt(1-4x))/2 where C(x) is the g.f. of the Catalan numbers (A000108); read by antidiagonals.

Table of values

List of values

cp's OEIS Frontend

A158825 Square array of coefficients in the successive iterations of x*C(x) = (1-sqrt(1-4*x))/2 where C(x) is the g.f. of the Catalan numbers (A000108); read by antidiagonals.

Table of values

List of values

A158825 Square array of coefficients in the successive iterations of xC(x) = (1-sqrt(1-4x))/2 where C(x) is the g.f. of the Catalan numbers (A000108); read by antidiagonals.