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, 0, 0), (0, 1, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.
A150624
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, 0, 0), (0, 1, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =492a(6) =2193a(7) =9965a(8) =45911a(9) =213885a(10) =1005000a(11) =4754324a(12) =22616174a(13) =108077286a(14) =518485699a(15) =2495592450a(16) =12046076643a(17) =58289170621a(18) =282660295155
External references
- oeis: A150624