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, 0, 0), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.
A150878
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, 0, 0), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =148a(5) =678a(6) =3170a(7) =15031a(8) =72005a(9) =347380a(10) =1686183a(11) =8220575a(12) =40224283a(13) =197408025a(14) =971135812a(15) =4787131799a(16) =23637741484a(17) =116884315128a(18) =578682102065
External references
- oeis: A150878