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, -1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A151093
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, -1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =43a(4) =177a(5) =751a(6) =3263a(7) =14421a(8) =64613a(9) =292639a(10) =1337295a(11) =6156635a(12) =28523245a(13) =132861795a(14) =621783139a(15) =2921870183a(16) =13780286589a(17) =65201337703a(18) =309392108399
External references
- oeis: A151093