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), (0, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A151207
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), (0, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =54a(4) =250a(5) =1191a(6) =5755a(7) =28053a(8) =137732a(9) =678922a(10) =3358344a(11) =16650293a(12) =82699123a(13) =411317004a(14) =2047848715a(15) =10204231387a(16) =50878868917a(17) =253815114615
External references
- oeis: A151207