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, 1), (0, 1, 1), (1, 0, -1), (1, 1, -1)}.
A149014
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, 1), (0, 1, 1), (1, 0, -1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =35a(5) =116a(6) =500a(7) =1862a(8) =8294a(9) =33249a(10) =151183a(11) =634813a(12) =2931946a(13) =12703620a(14) =59376538a(15) =263224140a(16) =1241544311a(17) =5601006741a(18) =26605292985a(19) =121687147307a(20) =581285094579
External references
- oeis: A149014