a(n) = 32*(2^n + 1).

Terms

a(0) =64a(1) =96a(2) =160a(3) =288a(4) =544a(5) =1056a(6) =2080a(7) =4128a(8) =8224a(9) =16416a(10) =32800a(11) =65568a(12) =131104a(13) =262176a(14) =524320a(15) =1048608a(16) =2097184a(17) =4194336a(18) =8388640a(19) =16777248a(20) =33554464a(21) =67108896a(22) =134217760a(23) =268435488a(24) =536870944a(25) =1073741856a(26) =2147483680a(27) =4294967328a(28) =8589934624a(29) =17179869216