A Fielder sequence: a(n) = a(n-1) + a(n-3) + a(n-4), n >= 4.

Terms

a(0) =4a(1) =1a(2) =1a(3) =4a(4) =9a(5) =11a(6) =16a(7) =29a(8) =49a(9) =76a(10) =121a(11) =199a(12) =324a(13) =521a(14) =841a(15) =1364a(16) =2209a(17) =3571a(18) =5776a(19) =9349a(20) =15129a(21) =24476a(22) =39601a(23) =64079a(24) =103684a(25) =167761a(26) =271441a(27) =439204a(28) =710649a(29) =1149851