# A257633 (b-file synthesized from sequence entry) 0 1 1 6 2 45 3 364 4 3060 5 26334 6 230230 7 2035800 8 18156204 9 163011640 10 1471442973 11 13340783196 12 121399651100 13 1108176102180 14 10142940735900 15 93052749919920 16 855420636763836 17 7877932561061640 18 72667580816130436 19 671262558647881200 20 6208770443303347920