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, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, 0)}.
A151069
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, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =39a(4) =161a(5) =677a(6) =2944a(7) =13043a(8) =58346a(9) =264572a(10) =1210963a(11) =5575702a(12) =25857861a(13) =120582205a(14) =564582762a(15) =2655193678a(16) =12532838999a(17) =59328877385a(18) =281701560204
External references
- oeis: A151069