# A111564 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 10 5 25 6 80 7 277 8 1150 9 5291 10 26918 11 145744 12 828856 13 4872771 14 29395784 15 180857382 16 1130700488 17 7163245811 18 45895629266 19 296937363511 20 1937625709854 21 12739784808937 22 84331837321404 23 561647630439975 24 3761221057579892