a(n) = F(n) + L(n) + n, where F(n) (A000045) and L(n) (A000204) are Fibonacci and Lucas numbers respectively.

A013915

a(n) = F(n) + L(n) + n, where F(n) (A000045) and L(n) (A000204) are Fibonacci and Lucas numbers respectively.

Terms

    a(0) =3a(1) =3a(2) =7a(3) =10a(4) =16a(5) =24a(6) =37a(7) =57a(8) =89a(9) =140a(10) =222a(11) =354a(12) =567a(13) =911a(14) =1467a(15) =2366a(16) =3820a(17) =6172a(18) =9977a(19) =16133a(20) =26093a(21) =42208a(22) =68282a(23) =110470a(24) =178731a(25) =289179a(26) =467887a(27) =757042a(28) =1224904a(29) =1981920

External references