a(n) = 9 a (n-1)-26 a(n-2) +24 a(n-3) (n >= 3) with a(0) =a(1)=1, a(2)=2.

A162723

a(n) = 9 a (n-1)-26 a(n-2) +24 a(n-3) (n >= 3) with a(0) =a(1)=1, a(2)=2.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =16a(4) =116a(5) =676a(6) =3452a(7) =16276a(8) =72956a(9) =316276a(10) =1340252a(11) =5590036a(12) =23054396a(13) =94314676a(14) =383578652a(15) =1553331796a(16) =6270493436a(17) =25253701876a(18) =101530450652a(19) =407669649556

External references