A276904 - cp's OEIS frontend

A276904 Number of positive walks with n steps {-3,-2,-1,0,1,2,3} starting at the origin, ending at altitude 2, and staying strictly above the x-axis.

n	a(n)
0	0
1	1
2	3
3	14
4	68
5	358
6	1966
7	11172
8	65104
9	387029
10	2337919
11	14309783
12	88555917
13	553171371
14	3483277785
15	22087378303
16	140913963221
17	903876307075
18	5825742149049
19	37710582868464
20	245052827645474
21	1598017940728401
22	10454217006683855
23	68591382498826168

[0, 1, 3, 14, 68, 358, 1966, 11172, 65104, 387029, 2337919, 14309783, 88555917, 553171371, 3483277785, 22087378303, 140913963221, 903876307075, 5825742149049, 37710582868464, 245052827645474, 1598017940728401, 10454217006683855, 68591382498826168]

cp's OEIS Frontend

A276904 Number of positive walks with n steps {-3,-2,-1,0,1,2,3} starting at the origin, ending at altitude 2, and staying strictly above the x-axis.

Table of values

List of values