a(n) = a(n-2)+a(n-3)+a(n-4)+a(n-5)+a(n-6)+2*a(n-7)+a(n-8).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =8a(9) =8a(10) =15a(11) =22a(12) =36a(13) =57a(14) =92a(15) =155a(16) =246a(17) =400a(18) =645a(19) =1044a(20) =1688a(21) =2731a(22) =4425a(23) =7155a(24) =11579a(25) =18733a(26) =30311a(27) =49043a(28) =79353a(29) =128402