A247323 - cp's OEIS frontend

A247323 Number of paths from (0,0) to (n,0), 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	1
1	0
2	1
3	1
4	2
5	5
6	7
7	18
8	29
9	63
10	116
11	229
12	445
13	856
14	1677
15	3229
16	6298
17	12185
18	23675
19	45922
20	89097
21	172931
22	335460
23	651065
24	1263145
25	2451184
26	4756105
27	9228777
28	17907538
29	34747357
30	67424063
31	130828370
32	253859365
33	492585879
34	955810772
35	1854647997
36	3598744709

[1, 0, 1, 1, 2, 5, 7, 18, 29, 63, 116, 229, 445, 856, 1677, 3229, 6298, 12185, 23675, 45922, 89097, 172931, 335460, 651065, 1263145, 2451184, 4756105, 9228777, 17907538, 34747357, 67424063, 130828370, 253859365, 492585879, 955810772, 1854647997, 3598744709]

cp's OEIS Frontend

A247323 Number of paths from (0,0) to (n,0), 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