First differences of A005579.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =5a(7) =8a(8) =13a(9) =20a(10) =34a(11) =53a(12) =88a(13) =143a(14) =236a(15) =387a(16) =641a(17) =1061a(18) =1763a(19) =2937a(20) =4903a(21) =8202a(22) =13750a(23) =23095a(24) =38850a(25) =65461a(26) =110465a(27) =186665a(28) =315827a(29) =535011