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, 0), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150692
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, 0), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =118a(5) =438a(6) =2076a(7) =8202a(8) =39686a(9) =162580a(10) =795574a(11) =3337562a(12) =16442636a(13) =70151960a(14) =347092412a(15) =1499683362a(16) =7441238858a(17) =32469987622a(18) =161429373368a(19) =710015723282
External references
- oeis: A150692