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), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
A150804
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), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =133a(5) =578a(6) =2609a(7) =11878a(8) =55067a(9) =256785a(10) =1210341a(11) =5727890a(12) =27294939a(13) =130445348a(14) =626403993a(15) =3014606716a(16) =14558440078a(17) =70427094279a(18) =341585868439
External references
- oeis: A150804