A151285 - cp's OEIS frontend

A151285 Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 1), (-1, 0), (0, 1), (1, 0)}.

n	a(n)
0	1
1	2
2	6
3	20
4	70
5	257
6	967
7	3722
8	14548
9	57619
10	230612
11	931083
12	3787276
13	15502881
14	63810147
15	263909613
16	1096140669
17	4570019368
18	19117859437
19	80220313298
20	337542496835
21	1423849191982
22	6020011578673
23	25506250066482
24	108277897776181
25	460482597553895
26	1961598838029100
27	8369127049893122

[1, 2, 6, 20, 70, 257, 967, 3722, 14548, 57619, 230612, 931083, 3787276, 15502881, 63810147, 263909613, 1096140669, 4570019368, 19117859437, 80220313298, 337542496835, 1423849191982, 6020011578673, 25506250066482, 108277897776181, 460482597553895, 1961598838029100, 8369127049893122]

cp's OEIS Frontend

A151285 Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 1), (-1, 0), (0, 1), (1, 0)}.

Table of values

List of values