Shifts left under XOR-convolution with itself.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =14a(5) =38a(6) =118a(7) =338a(8) =1006a(9) =2990a(10) =8974a(11) =26862a(12) =80510a(13) =241390a(14) =723934a(15) =2171046a(16) =6512910a(17) =19536974a(18) =58608782a(19) =175821710a(20) =527470318a(21) =1582385678a(22) =4747139342a(23) =14241362318a(24) =42724100334a(25) =128172182990a(26) =384516408110