Hexanacci numbers: a(n+1) = a(n)+...+a(n-5) with a(0)=...=a(4)=0, a(5)=1.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =1a(7) =2a(8) =4a(9) =8a(10) =16a(11) =32a(12) =63a(13) =125a(14) =248a(15) =492a(16) =976a(17) =1936a(18) =3840a(19) =7617a(20) =15109a(21) =29970a(22) =59448a(23) =117920a(24) =233904a(25) =463968a(26) =920319a(27) =1825529a(28) =3621088a(29) =7182728