a(n) = 366*2^n - 204 (n >= 1).

Terms

a(0) =528a(1) =1260a(2) =2724a(3) =5652a(4) =11508a(5) =23220a(6) =46644a(7) =93492a(8) =187188a(9) =374580a(10) =749364a(11) =1498932a(12) =2998068a(13) =5996340a(14) =11992884a(15) =23985972a(16) =47972148a(17) =95944500a(18) =191889204a(19) =383778612a(20) =767557428a(21) =1535115060a(22) =3070230324a(23) =6140460852a(24) =12280921908a(25) =24561844020a(26) =49123688244a(27) =98247376692a(28) =196494753588