A Fielder sequence: a(n) = a(n-1) + a(n-2) - a(n-7), n >= 8.

Terms

a(0) =0a(1) =2a(2) =3a(3) =6a(4) =10a(5) =17a(6) =21a(7) =38a(8) =57a(9) =92a(10) =143a(11) =225a(12) =351a(13) =555a(14) =868a(15) =1366a(16) =2142a(17) =3365a(18) =5282a(19) =8296a(20) =13023a(21) =20451a(22) =32108a(23) =50417a(24) =79160a(25) =124295a(26) =195159a(27) =306431a(28) =481139a(29) =755462