A247355 - cp's OEIS frontend

A247355 Number of paths from (0,1) 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	2
3	3
4	8
5	12
6	28
7	49
8	100
9	191
10	370
11	724
12	1392
13	2721
14	5254
15	10223
16	19812
17	38456
18	74628
19	144769
20	280984
21	545107
22	1057862
23	2052520
24	3982816
25	7728177
26	14995626
27	29097643
28	56460416
29	109556004
30	212580908
31	412491201
32	800394316
33	1553079415
34	3013584442

[0, 1, 2, 3, 8, 12, 28, 49, 100, 191, 370, 724, 1392, 2721, 5254, 10223, 19812, 38456, 74628, 144769, 280984, 545107, 1057862, 2052520, 3982816, 7728177, 14995626, 29097643, 56460416, 109556004, 212580908, 412491201, 800394316, 1553079415, 3013584442]

cp's OEIS Frontend

A247355 Number of paths from (0,1) 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