Fibonacci sequence beginning 1, 23.

Terms

a(0) =1a(1) =23a(2) =24a(3) =47a(4) =71a(5) =118a(6) =189a(7) =307a(8) =496a(9) =803a(10) =1299a(11) =2102a(12) =3401a(13) =5503a(14) =8904a(15) =14407a(16) =23311a(17) =37718a(18) =61029a(19) =98747a(20) =159776a(21) =258523a(22) =418299a(23) =676822a(24) =1095121a(25) =1771943a(26) =2867064a(27) =4639007a(28) =7506071a(29) =12145078