# A200092 (b-file synthesized from sequence entry) 3 1 4 1 5 1 6 1 7 20 8 1 9 70 10 1 11 182 12 1 13 420 14 1680 15 1 16 912 17 12600 18 1 19 1914 20 62370 21 1 22 3938 23 256410 24 369600 25 1 26 8008 27 949806 28 4804800 29 1 30 16172 31 3297294 32 38678640 33 1 34 32526 35 10966956 36 248047800 37 168168000