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), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.
A150263
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), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =88a(5) =362a(6) =1550a(7) =6778a(8) =30104a(9) =135458a(10) =616280a(11) =2825772a(12) =13050732a(13) =60641808a(14) =283188618a(15) =1328339472a(16) =6255474500a(17) =29558166908a(18) =140095615008a(19) =665841903428
External references
- oeis: A150263