# A260296 (b-file synthesized from sequence entry)
1 1
2 4
3 22
4 218
5 3028
6 55540
7 1235526
8 32434108
9 980179566
10 33522177088
11 1279935820810
12 53970628896500
13 2490952020480012
14 124903451391713412
15 6761440164391403896
16 393008709559373134184
17 24412776311194951680016
18 1613955767240361647220648
19 113146793787569865523200018
20 8384177419658944198600637096