# A066139 (b-file synthesized from sequence entry) 0 0 1 1 2 100 3 121 4 10000 5 10201 6 12100 7 1000000 8 1002001 9 1020100 10 1022121 11 1210000 12 1212201 13 100000000 14 100020001 15 100200100 16 100220121 17 102010000 18 102212100 19 121000000 20 121022001 21 121220100 22 10000000000 23 10000200001 24 10002000100