# A273583 (b-file synthesized from sequence entry)
3 1
4 6
5 34
6 192
7 1134
8 6716
9 40872
10 255308
11 1646736
12 10966948
13 75443030
14 534853224
15 3896868930
16 29123747126
17 222952505194
18 1746931730522
19 14000986111688
20 114736915809792
21 960962428696876
22 8221685556988910
23 71811228291496646
24 639892151737631798