# A027116 (b-file synthesized from sequence entry) 3 7 4 23 5 56 6 120 7 241 8 467 9 886 10 1660 11 3087 12 5715 13 10552 14 19452 15 35825 16 65943 17 121342 18 223240 19 410663 20 755391 21 1389448 22 2555664 23 4700673 24 8645963 25 15902486 26 29249316 27 53797967 28 98949979 29 181997480 30 334745652 31 615693345