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), (1, -1, 1), (1, 0, 1), (1, 1, 0)}.
A150507
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), (1, -1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =102a(5) =418a(6) =1822a(7) =7930a(8) =35834a(9) =161326a(10) =745277a(11) =3428471a(12) =16073766a(13) =75051209a(14) =355567823a(15) =1678216641a(16) =8012934452a(17) =38128613404a(18) =183143821040a(19) =876997842618
External references
- oeis: A150507