a(n) = a(n-2) + a(n-3), with a(0) = 3, a(1) = 2, a(2) = 6.

Terms

a(0) =3a(1) =2a(2) =6a(3) =5a(4) =8a(5) =11a(6) =13a(7) =19a(8) =24a(9) =32a(10) =43a(11) =56a(12) =75a(13) =99a(14) =131a(15) =174a(16) =230a(17) =305a(18) =404a(19) =535a(20) =709a(21) =939a(22) =1244a(23) =1648a(24) =2183a(25) =2892a(26) =3831a(27) =5075a(28) =6723a(29) =8906