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), (0, 1, 1), (1, 0, -1), (1, 1, 0)}.
A150604
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), (0, 1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =110a(5) =472a(6) =2079a(7) =9353a(8) =42739a(9) =197615a(10) =922243a(11) =4336704a(12) =20517659a(13) =97571226a(14) =465996270a(15) =2233748351a(16) =10741244740a(17) =51791965769a(18) =250327475997
External references
- oeis: A150604