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), (-1, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150351
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), (-1, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =91a(5) =338a(6) =1467a(7) =5796a(8) =26303a(9) =108000a(10) =500259a(11) =2106257a(12) =9889607a(13) =42377630a(14) =201042417a(15) =872967183a(16) =4173056423a(17) =18308765520a(18) =88029628261a(19) =389434579885
External references
- oeis: A150351