Multiply previous term by 8 and reverse.

Terms

a(0) =1a(1) =8a(2) =46a(3) =863a(4) =4096a(5) =86723a(6) =487396a(7) =8619983a(8) =46895986a(9) =888761573a(10) =4852900117a(11) =63900232883a(12) =460368102115a(13) =296184492863