A175124 - cp's OEIS frontend

A175124 A symmetric triangle, with sum the large Schröder numbers.

n	a(n)
1	1
2	1
3	1
4	1
5	4
6	1
7	1
8	10
9	10
10	1
11	1
12	20
13	48
14	20
15	1
16	1
17	35
18	161
19	161
20	35
21	1
22	1
23	56
24	434
25	824
26	434
27	56
28	1
29	1
30	84
31	1008
32	3186
33	3186
34	1008
35	84
36	1
37	1
38	120
39	2100
40	10152
41	16840
42	10152
43	2100
44	120
45	1
46	1
47	165
48	4026
49	28050
50	70807
51	70807
52	28050
53	4026
54	165
55	1

[1, 1, 1, 1, 4, 1, 1, 10, 10, 1, 1, 20, 48, 20, 1, 1, 35, 161, 161, 35, 1, 1, 56, 434, 824, 434, 56, 1, 1, 84, 1008, 3186, 3186, 1008, 84, 1, 1, 120, 2100, 10152, 16840, 10152, 2100, 120, 1, 1, 165, 4026, 28050, 70807, 70807, 28050, 4026, 165, 1]

cp's OEIS Frontend

A175124 A symmetric triangle, with sum the large Schröder numbers.

Table of values

List of values