a(n) = A062401(2^n + 1).

Terms

a(0) =2a(1) =2a(2) =2a(3) =12a(4) =6a(5) =16a(6) =24a(7) =80a(8) =84a(9) =320a(10) =360a(11) =864a(12) =1320a(13) =5456a(14) =5184a(15) =15744a(16) =19800a(17) =52800a(18) =69120a(19) =349520a(20) =370080a(21) =1036800a(22) =1425600a(23) =3640896a(24) =4741632a(25) =13989888a(26) =27091584a(27) =76743040a(28) =94656000a(29) =166387200