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, 0), (-1, 1, 0), (0, 0, 1), (1, 0, -1), (1, 0, 1)}.
A150399
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, 0), (-1, 1, 0), (0, 0, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =92a(5) =365a(6) =1526a(7) =6468a(8) =28070a(9) =123328a(10) =551027a(11) =2481736a(12) =11293654a(13) =51699421a(14) =238494777a(15) =1105386224a(16) =5152893766a(17) =24107334035a(18) =113276230772a(19) =533854758783
External references
- oeis: A150399