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, 0, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150748
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, 0, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =127a(5) =526a(6) =2398a(7) =10528a(8) =49079a(9) =222629a(10) =1052436a(11) =4872918a(12) =23256948a(13) =109198489a(14) =524785513a(15) =2488947601a(16) =12023885601a(17) =57458710208a(18) =278707023748
External references
- oeis: A150748