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, 1, -1), (1, 1, 1)}.
A151002
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, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =38a(4) =175a(5) =817a(6) =3888a(7) =18706a(8) =90741a(9) =442632a(10) =2169338a(11) =10666288a(12) =52587182a(13) =259821034a(14) =1285891645a(15) =6373073347a(16) =31622486634a(17) =157058315801a(18) =780692584245
External references
- oeis: A151002