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), (-1, 0, 1), (0, -1, 0), (1, 1, 0)}.
A149234
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), (-1, 0, 1), (0, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =34a(5) =123a(6) =419a(7) =1501a(8) =5732a(9) =20925a(10) =80815a(11) =314395a(12) =1209220a(13) =4820559a(14) =19083662a(15) =75911851a(16) =307724890a(17) =1237790403a(18) =5033871995a(19) =20612532057a(20) =84134008596a(21) =346989672093
External references
- oeis: A149234