A328269 - cp's OEIS frontend

A328269 Number of walks on cubic lattice starting at (0,0,0), ending at (0,n,n), remaining in the first (nonnegative) octant and using steps (0,0,1), (0,1,0), (1,0,0), (-1,1,1), (1,-1,1), and (1,1,-1).

n	a(n)
0	1
1	3
2	26
3	343
4	5594
5	103730
6	2094028
7	44889351
8	1006126370
9	23337166962
10	556199376622
11	13550764116530
12	336190200180652
13	8468872074477060
14	216120719672921820
15	5577150906683145103
16	145324963753397617230
17	3819107708757101038562
18	101122686499165125017886

[1, 3, 26, 343, 5594, 103730, 2094028, 44889351, 1006126370, 23337166962, 556199376622, 13550764116530, 336190200180652, 8468872074477060, 216120719672921820, 5577150906683145103, 145324963753397617230, 3819107708757101038562, 101122686499165125017886]

cp's OEIS Frontend

A328269 Number of walks on cubic lattice starting at (0,0,0), ending at (0,n,n), remaining in the first (nonnegative) octant and using steps (0,0,1), (0,1,0), (1,0,0), (-1,1,1), (1,-1,1), and (1,1,-1).

Table of values

List of values