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, 0), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
A150928
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, 0), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =33a(4) =151a(5) =632a(6) =2968a(7) =13118a(8) =62548a(9) =284927a(10) =1370647a(11) =6366362a(12) =30799646a(13) =144981633a(14) =704284837a(15) =3347236781a(16) =16311676879a(17) =78083501777a(18) =381477237431
External references
- oeis: A150928