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, -1, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1), (1, 1, 0)}.
A150747
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, -1, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =126a(5) =537a(6) =2425a(7) =10961a(8) =50711a(9) =235665a(10) =1107734a(11) =5232216a(12) =24871809a(13) =118726407a(14) =569049504a(15) =2736451496a(16) =13196496626a(17) =63803454991a(18) =309138528256
External references
- oeis: A150747