Number of walks from (0,0) to (n,n) in the region 0 <= x-y <= 5 with the steps (1,0), (0, 1), (2,0) and (0,2).
A127619
Number of walks from (0,0) to (n,n) in the region 0 <= x-y <= 5 with the steps (1,0), (0, 1), (2,0) and (0,2).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =22a(4) =117a(5) =654a(6) =3674a(7) =20763a(8) =117349a(9) =663529a(10) =3751874a(11) =21215245a(12) =119963514a(13) =678345474a(14) =3835772387a(15) =21689760681a(16) =122646936325a(17) =693519457822
External references
- oeis: A127619