a(n) = F(n+5) * F(n+2) - 12 * (-1)^n where F(n) = A000045(n) are the Fibonacci numbers.

A343008

a(n) = F(n+5) * F(n+2) - 12 * (-1)^n where F(n) = A000045(n) are the Fibonacci numbers.

Terms

    a(0) =28a(1) =27a(2) =117a(3) =260a(4) =727a(5) =1857a(6) =4908a(7) =12803a(8) =33565a(9) =87828a(10) =229983a(11) =602057a(12) =1576252a(13) =4126635a(14) =10803717a(15) =28284452a(16) =74049703a(17) =193864593a(18) =507544140a(19) =1328767763a(20) =3478759213a(21) =9107509812a(22) =23843770287a(23) =62423800985a(24) =163427632732a(25) =427859097147

External references