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, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150395
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, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =91a(5) =359a(6) =1460a(7) =6073a(8) =25724a(9) =110400a(10) =479215a(11) =2098947a(12) =9263894a(13) =41151657a(14) =183822696a(15) =825097254a(16) =3719217036a(17) =16827670230a(18) =76391658405a(19) =347830549447
External references
- oeis: A150395