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, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150634
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, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =115a(5) =506a(6) =2283a(7) =10434a(8) =48355a(9) =226022a(10) =1065021a(11) =5048947a(12) =24059449a(13) =115134926a(14) =552968713a(15) =2663873677a(16) =12866990143a(17) =62292114306a(18) =302177453151
External references
- oeis: A150634