a(0)=1, a(n+1) = (a(n)*7) XOR a(n).

Terms

a(0) =1a(1) =6a(2) =44a(3) =280a(4) =1712a(5) =10336a(6) =78528a(7) =610688a(8) =4745984a(9) =28476928a(10) =173222912a(11) =1108678656a(12) =6652604416a(13) =48774012928a(14) =292681859072