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), (0, 0, -1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150592
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), (0, 0, -1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =105a(5) =434a(6) =1823a(7) =7774a(8) =33835a(9) =148064a(10) =654193a(11) =2915791a(12) =13048725a(13) =58751884a(14) =265691571a(15) =1205496545a(16) =5491102385a(17) =25080469864a(18) =114855451761a(19) =527348708275
External references
- oeis: A150592