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, 0, 1), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150610
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, 0, 1), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =111a(5) =476a(6) =2099a(7) =9450a(8) =43187a(9) =199718a(10) =932105a(11) =4382967a(12) =20735681a(13) =98601676a(14) =470881455a(15) =2256986579a(16) =10852089299a(17) =52322169006a(18) =252870073029
External references
- oeis: A150610