"AGK" (ordered, elements, unlabeled) transform of 1,2,3,4...

Terms

a(0) =1a(1) =2a(2) =7a(3) =12a(4) =31a(5) =74a(6) =147a(7) =352a(8) =747a(9) =1634a(10) =3489a(11) =7636a(12) =16019a(13) =33246a(14) =72185a(15) =148168a(16) =308633a(17) =634758a(18) =1314109a(19) =2697356a(20) =5464861a(21) =11109678a(22) =22406875a(23) =45450728a(24) =90618789a(25) =181136290a(26) =360856875a(27) =716697428a(28) =1418196027