A175895 - cp's OEIS frontend

A175895 Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0 which never go above the line y=x.

n	a(n)
0	1
1	2
2	9
3	50
4	314
5	2116
6	14949
7	109246
8	818978
9	6263072
10	48668366
11	383182648
12	3050196328
13	24506969724
14	198482172753
15	1618700191002
16	13281652367078
17	109564878995724
18	908171084052990
19	7560049450347964
20	63176859344766204

[1, 2, 9, 50, 314, 2116, 14949, 109246, 818978, 6263072, 48668366, 383182648, 3050196328, 24506969724, 198482172753, 1618700191002, 13281652367078, 109564878995724, 908171084052990, 7560049450347964, 63176859344766204]

cp's OEIS Frontend

A175895 Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0 which never go above the line y=x.

Table of values

List of values