a(n) = a(n-1) + a(n-3) + a(n-4) + a(n-5) + a(n-7).

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =5a(6) =8a(7) =14a(8) =25a(9) =42a(10) =71a(11) =121a(12) =207a(13) =353a(14) =601a(15) =1025a(16) =1748a(17) =2980a(18) =5080a(19) =8661a(20) =14767a(21) =25176a(22) =42922a(23) =73178a(24) =124762a(25) =212707a(26) =362644a(27) =618273a(28) =1054096a(29) =1797131