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, 0, 1), (-1, 1, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150730
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, 0, 1), (-1, 1, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =28a(4) =128a(5) =520a(6) =2464a(7) =10768a(8) =51968a(9) =236384a(10) =1153024a(11) =5376064a(12) =26398464a(13) =125124224a(14) =617141248a(15) =2958910208a(16) =14639308800a(17) =70775611904a(18) =350949025792
External references
- oeis: A150730