a(n) is the largest anagram of 2*a(n-1), a(1)=1.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =61a(5) =221a(6) =442a(7) =884a(8) =8761a(9) =75221a(10) =544210a(11) =8842100a(12) =87642100a(13) =875422100a(14) =8754421000a(15) =88754210000a(16) =877542100000