A186826 - cp's OEIS frontend

A186826 Riordan array (s(x),x*S(x)) where s(x) is the g.f. of the little Schroeder numbers A001003, and S(x) is the g.f. of the large Schroeder numbers A006318.

n	a(n)
0	1
1	1
2	1
3	3
4	3
5	1
6	11
7	11
8	5
9	1
10	45
11	45
12	23
13	7
14	1
15	197
16	197
17	107
18	39
19	9
20	1
21	903
22	903
23	509
24	205
25	59
26	11
27	1
28	4279
29	4279
30	2473
31	1061
32	347
33	83
34	13
35	1
36	20793
37	20793
38	12235
39	5483
40	1949
41	541
42	111
43	15
44	1
45	103049
46	103049
47	61463
48	28435
49	10717
50	3285
51	795
52	143
53	17
54	1
55	518859
56	518859
57	312761
58	148249
59	58351
60	19199
61	5197
62	1117
63	179
64	19
65	1

[1, 1, 1, 3, 3, 1, 11, 11, 5, 1, 45, 45, 23, 7, 1, 197, 197, 107, 39, 9, 1, 903, 903, 509, 205, 59, 11, 1, 4279, 4279, 2473, 1061, 347, 83, 13, 1, 20793, 20793, 12235, 5483, 1949, 541, 111, 15, 1, 103049, 103049, 61463, 28435, 10717, 3285, 795, 143, 17, 1, 518859, 518859, 312761, 148249, 58351, 19199, 5197, 1117, 179, 19, 1]

cp's OEIS Frontend

A186826 Riordan array (s(x),x*S(x)) where s(x) is the g.f. of the little Schroeder numbers A001003, and S(x) is the g.f. of the large Schroeder numbers A006318.

Table of values

List of values