Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, 1), (-1, 0), (0, -1), (0, 1), (1, -1), (1, 1)}.
A151313
Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, 1), (-1, 0), (0, -1), (0, 1), (1, -1), (1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =44a(4) =224a(5) =1134a(6) =6040a(7) =32306a(8) =176772a(9) =973274a(10) =5423014a(11) =30386072a(12) =171490858a(13) =972254842a(14) =5538897624a(15) =31668725134a(16) =181702575182
External references
- oeis: A151313