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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
A148102
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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =77a(7) =236a(8) =741a(9) =2430a(10) =8179a(11) =28208a(12) =99475a(13) =356501a(14) =1296199a(15) =4783652a(16) =17871126a(17) =67465415a(18) =257298969a(19) =989810000a(20) =3838658082a(21) =15001356476a(22) =59013879343a(23) =233616780902a(24) =930237304959
External references
- oeis: A148102