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, 0, 1), (0, 1, 0), (1, -1, -1), (1, 1, 0)}.
A150118
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, 0, 1), (0, 1, 0), (1, -1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =19a(4) =71a(5) =275a(6) =1114a(7) =4651a(8) =19925a(9) =86643a(10) =382655a(11) =1712982a(12) =7743651a(13) =35289178a(14) =162101956a(15) =749571206a(16) =3484376167a(17) =16277276570a(18) =76387977097a(19) =359852913731
External references
- oeis: A150118