T(3n,n), where T is the array defined in A026105.
A026113
T(3n,n), where T is the array defined in A026105.
Terms
- a(0) =1a(1) =2a(2) =15a(3) =112a(4) =879a(5) =7084a(6) =58123a(7) =482980a(8) =4051542a(9) =34236670a(10) =291001515a(11) =2485209984a(12) =21308128100a(13) =183304844334
External references
- oeis: A026113