# A296192 (b-file synthesized from sequence entry) 1 1 2 1 3 6 4 5 5 28 6 630 7 396 8 9009 9 24024 10 87516 11 1511640 12 5819814 13 4576264 14 106234700 15 1147334760 16 1890494775 17 11031593040 18 343817983080 19 292314884400 20 10274868186660