# A049447 (b-file synthesized from sequence entry) 9 1 10 45 11 1155 12 22275 13 359502 14 5135130 15 67128490 16 820784250 17 9528822303 18 106175395755 19 1144614626805 20 12011282644725 21 123272476465204 22 1241963303533920 23 12320068811796900 24 120622574326072500 25 1167921451092973005 26 11201516780955125625 27 106563273280541795575