# A377314 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 19 4 73 5 281 6 1081 7 4159 8 16001 9 61561 10 236845 11 911219 12 3505753 13 13487761 14 51891761 15 199644319 16 768096001 17 2955112721 18 11369270485 19 43741245619 20 168286661033 21 647452990441 22 2490960200041 23 9583526232479 24 36870912288001 25 141854275761481