a(n) = 6*a(n-1) + 7*a(n-2), a(0) = 0, a(1) = 1.

Terms

a(0) =0a(1) =1a(2) =6a(3) =43a(4) =300a(5) =2101a(6) =14706a(7) =102943a(8) =720600a(9) =5044201a(10) =35309406a(11) =247165843a(12) =1730160900a(13) =12111126301a(14) =84777884106a(15) =593445188743