a(n) = A062402(2^n+1).

Terms

a(0) =1a(1) =3a(2) =7a(3) =12a(4) =31a(5) =42a(6) =124a(7) =224a(8) =511a(9) =847a(10) =1953a(11) =2688a(12) =12264a(13) =18816a(14) =29127a(15) =72540a(16) =131071a(17) =195048a(18) =558523a(19) =1077440a(20) =3164112a(21) =4552020a(22) =10890040a(23) =10342080a(24) =54525848a(25) =73260781a(26) =155671040a(27) =318848400a(28) =1080311232a(29) =964580240