A344553 - cp's OEIS frontend

A344553 Number of lattice paths from (0,0) to (2n-1,n) using steps E=(1,0), N=(0,1), and D=(1,1) which stay weakly above the line through (0,0) and (2n-1,n).

n	a(n)
1	1
2	3
3	17
4	119
5	929
6	7755
7	67745
8	611567
9	5660033
10	53415251
11	512072241
12	4972855783
13	48817414177
14	483649249179
15	4829637141825
16	48559914920927
17	491195889610241
18	4995080271452067
19	51037379418765905
20	523695644006188887
21	5394266374440159649
22	55756104288043890667

[1, 3, 17, 119, 929, 7755, 67745, 611567, 5660033, 53415251, 512072241, 4972855783, 48817414177, 483649249179, 4829637141825, 48559914920927, 491195889610241, 4995080271452067, 51037379418765905, 523695644006188887, 5394266374440159649, 55756104288043890667]

cp's OEIS Frontend

A344553 Number of lattice paths from (0,0) to (2n-1,n) using steps E=(1,0), N=(0,1), and D=(1,1) which stay weakly above the line through (0,0) and (2n-1,n).

Table of values

List of values