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, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
A151150
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, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =205a(5) =927a(6) =4263a(7) =19873a(8) =93477a(9) =443099a(10) =2111677a(11) =10111271a(12) =48593723a(13) =234274543a(14) =1132435961a(15) =5486484089a(16) =26633535227a(17) =129513967703a(18) =630765345243
External references
- oeis: A151150