A247629 - cp's OEIS frontend

A247629 Triangular array: T(n,k) = number of paths from (0,0) to (n,k), each segment given by a vector (1,1), (1,-1), or (2,0), not crossing the x-axis.

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	0
7	3
8	0
9	1
10	4
11	0
12	5
13	0
14	1
15	0
16	12
17	0
18	7
19	0
20	1
21	16
22	0
23	24
24	0
25	9
26	0
27	1
28	0
29	52
30	0
31	40
32	0
33	11
34	0
35	1
36	68
37	0
38	116
39	0
40	60
41	0
42	13
43	0
44	1
45	0
46	236
47	0
48	216
49	0
50	84
51	0
52	15
53	0
54	1
55	304
56	0
57	568
58	0
59	360
60	0
61	112
62	0
63	17
64	0
65	1
66	0
67	1108
68	0
69	1144
70	0
71	556
72	0
73	144

[1, 0, 1, 1, 0, 1, 0, 3, 0, 1, 4, 0, 5, 0, 1, 0, 12, 0, 7, 0, 1, 16, 0, 24, 0, 9, 0, 1, 0, 52, 0, 40, 0, 11, 0, 1, 68, 0, 116, 0, 60, 0, 13, 0, 1, 0, 236, 0, 216, 0, 84, 0, 15, 0, 1, 304, 0, 568, 0, 360, 0, 112, 0, 17, 0, 1, 0, 1108, 0, 1144, 0, 556, 0, 144]

cp's OEIS Frontend

A247629 Triangular array: T(n,k) = number of paths from (0,0) to (n,k), each segment given by a vector (1,1), (1,-1), or (2,0), not crossing the x-axis.

Table of values

List of values