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, 0), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150330
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, 0), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =88a(5) =325a(6) =1393a(7) =5608a(8) =24956a(9) =105724a(10) =482023a(11) =2111713a(12) =9789238a(13) =43910561a(14) =206007470a(15) =940232408a(16) =4451025298a(17) =20584939237a(18) =98131246779a(19) =458551690091
External references
- oeis: A150330