a(n) = 3*a(n-1) + 4*a(n-2) + a(n-3) with a(0)=2, a(1)=5, a(2)=22.

A215100

a(n) = 3*a(n-1) + 4*a(n-2) + a(n-3) with a(0)=2, a(1)=5, a(2)=22.

Terms

    a(0) =2a(1) =5a(2) =22a(3) =88a(4) =357a(5) =1445a(6) =5851a(7) =23690a(8) =95919a(9) =388368a(10) =1572470a(11) =6366801a(12) =25778651a(13) =104375627a(14) =422608286a(15) =1711106017a(16) =6928126822a(17) =28051412820a(18) =113577851765a(19) =459867333397

External references