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, 0, 0), (0, -1, 1), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
A150994
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, 0, 0), (0, -1, 1), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =170a(5) =788a(6) =3701a(7) =17621a(8) =84743a(9) =409854a(10) =1993846a(11) =9739235a(12) =47723741a(13) =234520717a(14) =1154955011a(15) =5698424753a(16) =28160079693a(17) =139341098410a(18) =690273126559
External references
- oeis: A150994