A247353 - cp's OEIS frontend

A247353 Number of paths from (0,1) 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	3
2	5
3	11
4	20
5	40
6	77
7	149
8	291
9	561
10	1094
11	2116
12	4113
13	7975
14	15477
15	30035
16	58268
17	113084
18	219397
19	425753
20	826091
21	1602969
22	3110382
23	6035336
24	11710993
25	22723803
26	44093269
27	85558059
28	166016420
29	322136912
30	625072109
31	1212885517
32	2353473731
33	4566663857

[1, 3, 5, 11, 20, 40, 77, 149, 291, 561, 1094, 2116, 4113, 7975, 15477, 30035, 58268, 113084, 219397, 425753, 826091, 1602969, 3110382, 6035336, 11710993, 22723803, 44093269, 85558059, 166016420, 322136912, 625072109, 1212885517, 2353473731, 4566663857]

cp's OEIS Frontend

A247353 Number of paths from (0,1) 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