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, 1), (1, 0, -1), (1, 0, 1)}.
A150611
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, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =112a(5) =474a(6) =2099a(7) =9312a(8) =42416a(9) =193697a(10) =896633a(11) =4168473a(12) =19524230a(13) =91810499a(14) =433923397a(15) =2056990221a(16) =9788790658a(17) =46692213723a(18) =223375427972
External references
- oeis: A150611