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, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150811
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, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =134a(5) =591a(6) =2671a(7) =12241a(8) =56897a(9) =266408a(10) =1258036a(11) =5971141a(12) =28484881a(13) =136422997a(14) =655618049a(15) =3159999564a(16) =15269565860a(17) =73948510773a(18) =358825922576
External references
- oeis: A150811