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, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
A151016
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, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =39a(4) =185a(5) =876a(6) =4272a(7) =20822a(8) =102663a(9) =506407a(10) =2511487a(11) =12460241a(12) =61987781a(13) =308486218a(14) =1537481126a(15) =7664734089a(16) =38242778515a(17) =190848327321a(18) =952890984361
External references
- oeis: A151016