a(n) = 3^n*pentanacci(n) or (3^n)*A023424(n-1).

A127222

a(n) = 3^n*pentanacci(n) or (3^n)*A023424(n-1).

Terms

    a(0) =3a(1) =27a(2) =189a(3) =1215a(4) =7533a(5) =41553a(6) =247131a(7) =1463103a(8) =8640837a(9) =50959287a(10) =300264165a(11) =1771292853a(12) =10447598619a(13) =61618989627a(14) =363414767589

External references