# A268493 (b-file synthesized from sequence entry)
0 3
1 29
2 289
3 321
4 3209
5 32089
6 106963
7 356543
8 3565429
9 11884763
10 118847629
11 132052921
12 440176403
13 4401764029
14 4890848921
15 48908489209
16 163028297363
17 1630282973629
18 5434276578763
19 18114255262543
20 60380850875143
21 201269502917143
22 670898343057143