A101920 - cp's OEIS frontend

A101920 Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k up steps starting at an odd height.

n	a(n)
1	2
2	5
3	1
4	13
5	8
6	1
7	34
8	42
9	13
10	1
11	89
12	183
13	102
14	19
15	1
16	233
17	717
18	624
19	205
20	26
21	1
22	610
23	2622
24	3275
25	1650
26	366
27	34
28	1
29	1597
30	9134
31	15473
32	11020
33	3716
34	602
35	43
36	1
37	4181
38	30691
39	67684
40	64553
41	30520
42	7483
43	932
44	53
45	1
46	10946
47	100284
48	279106
49	342867
50	215481

[2, 5, 1, 13, 8, 1, 34, 42, 13, 1, 89, 183, 102, 19, 1, 233, 717, 624, 205, 26, 1, 610, 2622, 3275, 1650, 366, 34, 1, 1597, 9134, 15473, 11020, 3716, 602, 43, 1, 4181, 30691, 67684, 64553, 30520, 7483, 932, 53, 1, 10946, 100284, 279106, 342867, 215481]

cp's OEIS Frontend

A101920 Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k up steps starting at an odd height.

Table of values

List of values