A247322 - cp's OEIS frontend

A247322 Number of paths from (0,0) to the line x = n, each consisting of segments given by the vectors (1,1), (1,2), (1,-1), with vertices (i,k) satisfying 0 <= k <= 3.

n	a(n)
0	1
1	2
2	5
3	9
4	18
5	35
6	67
7	132
8	253
9	495
10	956
11	1859
12	3605
13	6994
14	13577
15	26333
16	51114
17	99159
18	192431
19	373372
20	724497
21	1405819
22	2727804
23	5293079
24	10270553
25	19929026
26	38670013
27	75035105
28	145597538
29	282516315
30	548192811
31	1063708916
32	2064013525
33	4004996055

[1, 2, 5, 9, 18, 35, 67, 132, 253, 495, 956, 1859, 3605, 6994, 13577, 26333, 51114, 99159, 192431, 373372, 724497, 1405819, 2727804, 5293079, 10270553, 19929026, 38670013, 75035105, 145597538, 282516315, 548192811, 1063708916, 2064013525, 4004996055]

cp's OEIS Frontend

A247322 Number of paths from (0,0) to the line x = n, each consisting of segments given by the vectors (1,1), (1,2), (1,-1), with vertices (i,k) satisfying 0 <= k <= 3.

Table of values

List of values