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), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.
A150232
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), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =82a(5) =325a(6) =1333a(7) =5544a(8) =23533a(9) =101436a(10) =440371a(11) =1931229a(12) =8542981a(13) =37968045a(14) =169772909a(15) =763195984a(16) =3442334727a(17) =15589359222a(18) =70856340070a(19) =322853710449
External references
- oeis: A150232