# A307696 (b-file synthesized from sequence entry)
1 2
2 7
3 34
4 200
5 1318
6 9354
7 69864
8 541323
9 4310950
10 35066384
11 290081932
12 2432766082
13 20635672664
14 176727482860
15 1526000459400
16 13270616752680
17 116124930068670
18 1021736927603190
19 9033726534916920
20 80220639767921370
21 715166816624282820
22 6398357633173869600