A247325 - cp's OEIS frontend

A247325 Number of paths from (0,0) to (n,2), with vertices (i,k) satisfying 0 <= k <= 3, consisting of segments given by the vectors (1,1), (1,2), (1,-1).

n	a(n)
0	0
1	1
2	1
3	4
4	5
5	13
6	22
7	45
8	87
9	166
10	329
11	627
12	1232
13	2373
14	4621
15	8956
16	17377
17	33737
18	65422
19	127009
20	246363
21	478134
22	927685
23	1800119
24	3492960
25	6777593
26	13151433
27	25518580
28	49516525
29	96081013
30	186435302
31	361757509
32	701951407
33	1362062118
34	2642933937
35	5128331659

[0, 1, 1, 4, 5, 13, 22, 45, 87, 166, 329, 627, 1232, 2373, 4621, 8956, 17377, 33737, 65422, 127009, 246363, 478134, 927685, 1800119, 3492960, 6777593, 13151433, 25518580, 49516525, 96081013, 186435302, 361757509, 701951407, 1362062118, 2642933937, 5128331659]

cp's OEIS Frontend

A247325 Number of paths from (0,0) to (n,2), with vertices (i,k) satisfying 0 <= k <= 3, consisting of segments given by the vectors (1,1), (1,2), (1,-1).

Table of values

List of values