# A065086 (b-file synthesized from sequence entry) 1 1 2 9 3 126 4 1920 5 27190 6 347168 7 3990467 8 42744527 9 440764556 10 4464045276 11 44863859589 12 449488519847 13 4498059105204 14 44992451829730 15 449969622539954 16 4499873022468708 17 44999449703306768 18 449997540235466340 19 4499988731927483569 20 44999947410278947807