# A050864 (b-file synthesized from sequence entry) 1 1 2 23 3 25 4 53 5 65 6 139 7 149 8 481 9 613 10 1343 11 1601 12 2125 13 4385 14 9005 15 9169 16 57013 17 99821 18 113893 19 162653 20 206293 21 491135