# A150767 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 30 4 127 5 551 6 2452 7 11147 8 51307 9 238818 10 1120969 11 5298162 12 25179300 13 120237558 14 576398807 15 2772530424 16 13374884306 17 64683710330 18 313515943651 19 1522541206374 20 7406754403932 21 36087442301892 22 176069728209768 23 860110592984474 24 4206433978828013 25 20592989447420333 26 100909340300169596