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, -1, -1), (-1, -1, 1), (-1, 0, 1), (1, 0, 1), (1, 1, 0)}.
A150384
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, -1, -1), (-1, -1, 1), (-1, 0, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =98a(5) =361a(6) =1593a(7) =6288a(8) =28328a(9) =115850a(10) =529887a(11) =2219923a(12) =10237960a(13) =43662198a(14) =202691642a(15) =875687198a(16) =4085356332a(17) =17833779506a(18) =83512309548a(19) =367612178355
External references
- oeis: A150384