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, 1, 1), (0, 1, 0), (1, -1, 0)}.
A148184
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, 1, 1), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =12a(5) =29a(6) =94a(7) =268a(8) =922a(9) =2875a(10) =10299a(11) =33924a(12) =125228a(13) =430637a(14) =1624161a(15) =5760773a(16) =22105631a(17) =80409248a(18) =312835080a(19) =1160261458a(20) =4565944319a(21) =17217530128a(22) =68405677784a(23) =261423539372
External references
- oeis: A148184