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, 0, 1), (0, 1, -1), (0, 1, 1), (1, 0, 0)}.
A151103
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, 0, 1), (0, 1, -1), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =43a(4) =183a(5) =805a(6) =3623a(7) =16590a(8) =76954a(9) =360408a(10) =1700669a(11) =8075427a(12) =38538364a(13) =184683663a(14) =888178746a(15) =4284291845a(16) =20719508879a(17) =100427985517a(18) =487736356011
External references
- oeis: A151103