a(n) = a(n-1) + a(n-2) - 1 for n > 1, a(0)=3, a(1)=2.

Terms

a(0) =3a(1) =2a(2) =4a(3) =5a(4) =8a(5) =12a(6) =19a(7) =30a(8) =48a(9) =77a(10) =124a(11) =200a(12) =323a(13) =522a(14) =844a(15) =1365a(16) =2208a(17) =3572a(18) =5779a(19) =9350a(20) =15128a(21) =24477a(22) =39604a(23) =64080a(24) =103683a(25) =167762a(26) =271444a(27) =439205a(28) =710648a(29) =1149852