a(n) = floor(7^n / 2^n) mod 2^n.

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =6a(5) =13a(6) =46a(7) =33a(8) =246a(9) =479a(10) =398a(11) =883a(12) =20a(13) =6215a(14) =9467a(15) =16751a(16) =42245a(17) =115091a(18) =140675a(19) =492363a(20) =674695a(21) =1312859a(22) =2497856a(23) =2451041a(24) =4384342a(25) =6956591a(26) =24348068a(27) =118772672a(28) =147268896a(29) =112787953