Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 1, 1), (0, -1, 1), (0, 0, 1), (1, 0, -1)}.
A148323
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 1, 1), (0, -1, 1), (0, 0, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =41a(6) =134a(7) =451a(8) =1579a(9) =5725a(10) =21247a(11) =80532a(12) =311203a(13) =1220208a(14) =4851662a(15) =19519760a(16) =79346540a(17) =325592275a(18) =1347098177a(19) =5615181079a(20) =23565529525a(21) =99503559928a(22) =422509407783
External references
- oeis: A148323