Indices of last windows of trapezoidal maps.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =11a(5) =21a(6) =45a(7) =85a(8) =179a(9) =341a(10) =717a(11) =1365a(12) =2867a(13) =5461a(14) =11475a(15) =21845a(16) =45875a(17) =87381a(18) =183597a(19) =349525a(20) =734003a(21) =1398101a(22) =2937555a(23) =5592405a(24) =11744051a(25) =22369621a(26) =47000877a(27) =89478485a(28) =187904819