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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
A150354
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), (1, 0, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =91a(5) =347a(6) =1442a(7) =5894a(8) =25196a(9) =107021a(10) =466509a(11) =2028918a(12) =8972896a(13) =39647390a(14) =177288585a(15) =792396980a(16) =3573835281a(17) =16114444215a(18) =73173843517a(19) =332254382249
External references
- oeis: A150354