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, -1, 1), (-1, 0, -1), (-1, 1, 1), (1, 0, 0)}.
A148069
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, -1, 1), (-1, 0, -1), (-1, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =12a(5) =25a(6) =97a(7) =217a(8) =872a(9) =2073a(10) =8739a(11) =21791a(12) =94168a(13) =242515a(14) =1052724a(15) =2768883a(16) =12208052a(17) =32759425a(18) =146062195a(19) =398210911a(20) =1784256044a(21) =4923235527a(22) =22189335102a(23) =61880489173a(24) =280668260110a(25) =790141842345
External references
- oeis: A148069