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), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A150899
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), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =158a(5) =734a(6) =3522a(7) =16931a(8) =82554a(9) =403038a(10) =1981441a(11) =9752204a(12) =48182790a(13) =238274637a(14) =1180966793a(15) =5857505302a(16) =29093385069a(17) =144585962175a(18) =719208130384
External references
- oeis: A150899