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, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150793
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, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =129a(5) =561a(6) =2490a(7) =11245a(8) =51533a(9) =238676a(10) =1114413a(11) =5240536a(12) =24788101a(13) =117813202a(14) =562262025a(15) =2693085867a(16) =12939283871a(17) =62336917334a(18) =301041033610
External references
- oeis: A150793