# A043997 (b-file synthesized from sequence entry) 1 20 2 102 3 120 4 209 5 220 6 302 7 320 8 402 9 420 10 502 11 520 12 602 13 620 14 702 15 720 16 802 17 820 18 902 19 920 20 1002 21 1029 22 1102 23 1120 24 1209 25 1220 26 1302 27 1320 28 1402 29 1420 30 1502 31 1520 32 1602 33 1620 34 1702 35 1720 36 1802 37 1820 38 1902 39 1920 40 2099 41 2102