A177787 - cp's OEIS frontend

A177787 Number of paths from (0,0) to (n+2,n) using only up and right steps and avoiding two or more consecutive moves up or three or more consecutive moves right.

n	a(n)
1	2
2	5
3	10
4	18
5	30
6	47
7	70
8	100
9	138
10	185
11	242
12	310
13	390
14	483
15	590
16	712
17	850
18	1005
19	1178
20	1370
21	1582
22	1815
23	2070
24	2348
25	2650
26	2977
27	3330
28	3710
29	4118
30	4555
31	5022
32	5520
33	6050
34	6613
35	7210
36	7842
37	8510
38	9215
39	9958
40	10740
41	11562
42	12425
43	13330
44	14278
45	15270

[2, 5, 10, 18, 30, 47, 70, 100, 138, 185, 242, 310, 390, 483, 590, 712, 850, 1005, 1178, 1370, 1582, 1815, 2070, 2348, 2650, 2977, 3330, 3710, 4118, 4555, 5022, 5520, 6050, 6613, 7210, 7842, 8510, 9215, 9958, 10740, 11562, 12425, 13330, 14278, 15270]

cp's OEIS Frontend

A177787 Number of paths from (0,0) to (n+2,n) using only up and right steps and avoiding two or more consecutive moves up or three or more consecutive moves right.

Table of values

List of values