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, -1), (-1, 0, 0), (0, 1, 1), (1, -1, 0), (1, 1, 0)}.
A150558
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, -1), (-1, 0, 0), (0, 1, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =106a(5) =438a(6) =1886a(7) =8208a(8) =36645a(9) =164838a(10) =749978a(11) =3436717a(12) =15865958a(13) =73717234a(14) =344237449a(15) =1614232355a(16) =7599086216a(17) =35897479082a(18) =170135432788a(19) =808558437606
External references
- oeis: A150558