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), (0, 0, 1), (0, 1, 1), (1, 1, -1), (1, 1, 0)}.
A151185
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), (0, 0, 1), (0, 1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =51a(4) =228a(5) =1046a(6) =4890a(7) =23163a(8) =110778a(9) =533734a(10) =2586338a(11) =12590026a(12) =61513848a(13) =301461872a(14) =1481094428a(15) =7292017771a(16) =35965507614a(17) =177657952426a(18) =878718765970
External references
- oeis: A151185