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, 1), (1, -1, -1), (1, 0, 0), (1, 1, 0)}.
A150333
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, 1), (1, -1, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =89a(5) =337a(6) =1436a(7) =5842a(8) =25590a(9) =108678a(10) =484318a(11) =2110606a(12) =9514734a(13) =42201925a(14) =191847029a(15) =861588143a(16) =3941534667a(17) =17866347492a(18) =82141080518a(19) =374987229911
External references
- oeis: A150333