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, 0, -1), (1, 0, -1), (1, 0, 1)}.
A149298
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, 0, -1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =46a(5) =163a(6) =711a(7) =2795a(8) =12428a(9) =51753a(10) =235649a(11) =1018677a(12) =4692842a(13) =20793843a(14) =96868626a(15) =437325625a(16) =2053558366a(17) =9396741255a(18) =44410201233a(19) =205466708855a(20) =976289490566
External references
- oeis: A149298