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, 0), (-1, 0, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
A150822
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, 0), (-1, 0, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =142a(5) =613a(6) =2911a(7) =13254a(8) =64103a(9) =300048a(10) =1465700a(11) =6979549a(12) =34308642a(13) =165223123a(14) =815532129a(15) =3958572282a(16) =19595889988a(17) =95663500938a(18) =474546185421
External references
- oeis: A150822