# A107902 (b-file synthesized from sequence entry) 1 1 2 2 3 2 4 2 5 4 6 12 7 32 8 72 9 148 10 318 11 772 12 2014 13 5216 14 13060 15 32168 16 80176 17 204714 18 531054 19 1380492 20 3574768 21 9247262 22 24023702 23 62819630 24 165074070 25 434726670 26 1145890266 27 3024348486 28 7999762500 29 21214170582 30 56378759128 31 150069876570