a(n+5) = a(n+3) + a(n+2) + a(n), with a(1) = a(2) = a(3) = a(4) = a(5) = 1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =5a(8) =7a(9) =9a(10) =15a(11) =19a(12) =29a(13) =41a(14) =57a(15) =85a(16) =117a(17) =171a(18) =243a(19) =345a(20) =499a(21) =705a(22) =1015a(23) =1447a(24) =2065a(25) =2961a(26) =4217a(27) =6041a(28) =8625a(29) =12323