a(n) = A230624(n)/2.

Terms

a(0) =0a(1) =1a(2) =5a(3) =7a(4) =11a(5) =19a(6) =31a(7) =47a(8) =79a(9) =103a(10) =159a(11) =191a(12) =239a(13) =303a(14) =383a(15) =479a(16) =511a(17) =767a(18) =831a(19) =863a(20) =895a(21) =959a(22) =991a(23) =1119a(24) =1311a(25) =1343a(26) =1503a(27) =1631a(28) =1791a(29) =1983