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, 1, -1), (0, 0, -1), (0, 1, -1), (1, 0, 1)}.
A149100
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, 1, -1), (0, 0, -1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =33a(5) =96a(6) =356a(7) =1247a(8) =4571a(9) =17184a(10) =65009a(11) =248797a(12) =973981a(13) =3792464a(14) =15064338a(15) =59942711a(16) =239916910a(17) =969858096a(18) =3922559131a(19) =15980739490a(20) =65382849875a(21) =268024851468
External references
- oeis: A149100