a(n) = a(n-1) + a(n-2) - a(n-3) +a(n-4) + a(n-5) for n >= 6, where a(0) = 2, a(1) = 4, a(2) = 7, a(3) = 12, a(4) = 19, a(5) = 31.

A287525

a(n) = a(n-1) + a(n-2) - a(n-3) +a(n-4) + a(n-5) for n >= 6, where a(0) = 2, a(1) = 4, a(2) = 7, a(3) = 12, a(4) = 19, a(5) = 31.

Terms

    a(0) =2a(1) =4a(2) =7a(3) =12a(4) =19a(5) =31a(6) =49a(7) =80a(8) =129a(9) =210a(10) =339a(11) =549a(12) =887a(13) =1436a(14) =2323a(15) =3760a(16) =6083a(17) =9843a(18) =15925a(19) =25768a(20) =41693a(21) =67462a(22) =109155a(23) =176617a(24) =285771a(25) =462388a(26) =748159a(27) =1210548a(28) =1958707a(29) =3169255

External references