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), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
A150617
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), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =483a(6) =2138a(7) =9681a(8) =44374a(9) =205500a(10) =961614a(11) =4532177a(12) =21472917a(13) =102258257a(14) =489141279a(15) =2347573314a(16) =11300344747a(17) =54548339666a(18) =263926643851
External references
- oeis: A150617