# A204450 (b-file synthesized from sequence entry) 0 0 1 2 2 6 3 17 4 30 5 177 6 417 7 1857 8 4302 9 19457 10 47731 11 203777 12 509769 13 2134017 14 5462701 15 22347777 16 58104062 17 234029057 18 616919457 19 2450784257 20 6533317815 21 25664946177 22 69085604341 23 268766806017 24 729558799305 25 2814562533377