# A214267 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 4 5 14 6 46 7 224 8 1024 9 6320 10 36976 11 275792 12 1965664 13 17180144 14 144361456 15 1446351104 16 13997185024 17 158116017920 18 1731678144256 19 21771730437632 20 266182076161024 21 3686171162253824 22 49763143319190016 23 752594181757712384 24 11118629668610842624