a(n) = 3*a(n-1) + 24*a(n-2) + a(n-3), with a(0)=0, a(1)=2, and a(2)=7.

A217069

a(n) = 3*a(n-1) + 24*a(n-2) + a(n-3), with a(0)=0, a(1)=2, and a(2)=7.

Terms

    a(0) =0a(1) =2a(2) =7a(3) =69a(4) =377a(5) =2794a(6) =17499a(7) =119930a(8) =782560a(9) =5243499a(10) =34631867a(11) =230522137a(12) =1527974718a(13) =10151087309a(14) =67355177296a(15) =447219602022

External references