# A348197 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 4 4 10 5 28 6 84 7 264 8 860 9 2880 10 9862 11 34392 12 121770 13 436688 14 1583146 15 5793216 16 21370806 17 79391536 18 296760222 19 1115327844 20 4212125662 21 15976390684 22 60833679424 23 232452408632 24 891060970152 25 3425639505624 26 13204738280326 27 51024408662932 28 197607503526934