# A172524 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 4 4 7 5 12 6 20 7 33 8 72 9 196 10 710 11 1546 12 2599 13 6738 14 19553 15 80688 16 185625 17 978142 18 2432840 19 12112678 20 29466988 21 39202128 22 40962878 23 41948928 24 42570288 25 42684103 26 43265540 27 44518036 28 52194742 29 65214030 30 159581828 31 337649208