Convolution of (1, p(1), p(2), ...) and (F(2), F(3), F(4), ...).

Terms

a(0) =1a(1) =4a(2) =10a(3) =22a(4) =44a(5) =84a(6) =152a(7) =266a(8) =454a(9) =762a(10) =1268a(11) =2090a(12) =3426a(13) =5594a(14) =9104a(15) =14788a(16) =23992a(17) =38892a(18) =63004a(19) =102024a(20) =165166a(21) =267334a(22) =432652a(23) =700148a(24) =1132972a(25) =1833306a(26) =2966476a(27) =4799986a(28) =7766672