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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 0, 1)}.
A151141
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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =46a(4) =207a(5) =941a(6) =4415a(7) =21045a(8) =100678a(9) =486957a(10) =2370954a(11) =11563058a(12) =56680194a(13) =278759272a(14) =1372238073a(15) =6773424153a(16) =33496331672a(17) =165743991475a(18) =821426350054
External references
- oeis: A151141