A238122 - cp's OEIS frontend

A238122 Irregular triangle read by rows: T(n,k) gives the number of ballot sequences of length n having k descents, n>=0, 0<=k<=A083920(n-1).

n	a(n)
0	1
1	1
2	2
3	3
4	1
5	5
6	5
7	7
8	16
9	3
10	11
11	43
12	21
13	1
14	15
15	99
16	101
17	17
18	22
19	215
20	373
21	145
22	9
23	30
24	430
25	1174
26	836
27	146
28	4
29	42
30	834
31	3337
32	3846
33	1324
34	112
35	1
36	56
37	1529
38	8642
39	15002
40	8786
41	1615
42	66
43	77
44	2765
45	21148
46	52132
47	47013
48	15403
49	1582
50	32
51	101
52	4792
53	48713
54	164576
55	214997
56	112106
57	21895
58	1310
59	14

[1, 1, 2, 3, 1, 5, 5, 7, 16, 3, 11, 43, 21, 1, 15, 99, 101, 17, 22, 215, 373, 145, 9, 30, 430, 1174, 836, 146, 4, 42, 834, 3337, 3846, 1324, 112, 1, 56, 1529, 8642, 15002, 8786, 1615, 66, 77, 2765, 21148, 52132, 47013, 15403, 1582, 32, 101, 4792, 48713, 164576, 214997, 112106, 21895, 1310, 14]

cp's OEIS Frontend

A238122 Irregular triangle read by rows: T(n,k) gives the number of ballot sequences of length n having k descents, n>=0, 0<=k<=A083920(n-1).

Table of values

List of values