Fibonacci(4n+2)+3, or Fibonacci(2n-1)*Lucas(2n+3).

A081073

Fibonacci(4n+2)+3, or Fibonacci(2n-1)*Lucas(2n+3).

Terms

    a(0) =4a(1) =11a(2) =58a(3) =380a(4) =2587a(5) =17714a(6) =121396a(7) =832043a(8) =5702890a(9) =39088172a(10) =267914299a(11) =1836311906a(12) =12586269028a(13) =86267571275a(14) =591286729882

External references