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), (1, -1, 1), (1, 1, 0)}.
A149288
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), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =44a(5) =167a(6) =688a(7) =2890a(8) =12419a(9) =54454a(10) =241769a(11) =1087412a(12) =4935565a(13) =22595510a(14) =104165606a(15) =483135030a(16) =2252977513a(17) =10554133201a(18) =49650073966a(19) =234409724447
External references
- oeis: A149288