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, 0, -1), (0, -1, 1), (0, 1, 0), (1, 0, -1)}.
A148081
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, 0, -1), (0, -1, 1), (0, 1, 0), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =24a(6) =65a(7) =192a(8) =580a(9) =1769a(10) =5600a(11) =18261a(12) =60327a(13) =204364a(14) =695916a(15) =2390408a(16) =8372916a(17) =29567259a(18) =105555351a(19) =380076126a(20) =1372150571a(21) =4999652704a(22) =18372034289a(23) =67871175118a(24) =252393439474a(25) =941509545219
External references
- oeis: A148081