# A113225 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 6 4 15 5 35 6 85 7 204 8 493 9 1189 10 2871 11 6930 12 16731 13 40391 14 97513 15 235416 16 568345 17 1372105 18 3312555 19 7997214 20 19306983 21 46611179 22 112529341 23 271669860 24 655869061 25 1583407981 26 3822685023 27 9228778026 28 22280241075 29 53789260175