A Fielder sequence. a(n) = a(n-1) + a(n-3) + a(n-4) + a(n-5), n >= 6.

Terms

a(0) =1a(1) =1a(2) =4a(3) =9a(4) =16a(5) =22a(6) =36a(7) =65a(8) =112a(9) =186a(10) =309a(11) =522a(12) =885a(13) =1492a(14) =2509a(15) =4225a(16) =7124a(17) =12010a(18) =20236a(19) =34094a(20) =57453a(21) =96823a(22) =163163a(23) =274946a(24) =463316a(25) =780755a(26) =1315687a(27) =2217112a(28) =3736129a(29) =6295887