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, 1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150623
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, 1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =492a(6) =2181a(7) =9826a(8) =44991a(9) =207986a(10) =970937a(11) =4562699a(12) =21563791a(13) =102415218a(14) =488427551a(15) =2337725577a(16) =11224143645a(17) =54036226588a(18) =260775300141
External references
- oeis: A150623