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, 0), (0, -1, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150988
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, 0), (0, -1, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =37a(4) =165a(5) =746a(6) =3448a(7) =16119a(8) =76013a(9) =361046a(10) =1723957a(11) =8267905a(12) =39795471a(13) =192115078a(14) =929836921a(15) =4510146186a(16) =21918059442a(17) =106692274128a(18) =520116707988
External references
- oeis: A150988