# A174200 (b-file synthesized from sequence entry) 1 2 2 22 3 222 4 3 5 33 6 333 7 4 8 44 9 444 10 5 11 55 12 555 13 6 14 66 15 666 16 7 17 77 18 777 19 7777 20 8 21 88 22 888 23 9 24 99 25 999 26 9999