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, -1, 0), (1, 1, -1), (1, 1, 0)}.
A150842
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, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =138a(5) =612a(6) =2782a(7) =12835a(8) =59916a(9) =282151a(10) =1337920a(11) =6379086a(12) =30552956a(13) =146880837a(14) =708342744a(15) =3425171883a(16) =16600524520a(17) =80617576576a(18) =392192150420
External references
- oeis: A150842