# A049350 (b-file synthesized from sequence entry) 1 1 2 11 3 71 4 356 5 1866 6 10476 7 57186 8 308621 9 1682031 10 9170291 11 49879401 12 271409736 13 1477549796 14 8042157456 15 43769353716 16 238229560201 17 1296650911661 18 7057377605971 19 38411803629131 20 209067989511516