a(n) are the denominators corresponding to A370825(n).

Terms

a(0) =2a(1) =1a(2) =14a(3) =1a(4) =62a(5) =3a(6) =254a(7) =17a(8) =1022a(9) =31a(10) =178a(11) =3a(12) =16382a(13) =5461a(14) =65534a(15) =257a(16) =262142a(17) =657a(18) =1048574a(19) =1271a(20) =4194302a(21) =60787a(22) =356962a(23) =12291a(24) =67108862a(25) =22369621a(26) =268435454a(27) =617093a(28) =1073741822a(29) =149943