# A250282 (b-file synthesized from sequence entry) 1 128 2 2763 3 20252 4 107387 5 381812 6 1154141 7 2908232 8 6704631 9 13816144 10 26741121 11 48197940 12 83583525 13 137527528 14 219303553 15 336659016 16 505804957 17 737614588 18 1056435849 19 1478402044 20 2041032531 21 2764805264