# A253210 (b-file synthesized from sequence entry)
0 7
1 13
2 55
3 349
4 2407
5 16813
6 117655
7 823549
8 5764807
9 40353613
10 282475255
11 1977326749
12 13841287207
13 96889010413
14 678223072855
15 4747561509949
16 33232930569607
17 232630513987213
18 1628413597910455
19 11398895185373149
20 79792266297612007
21 558545864083284013