# A007793 (b-file synthesized from sequence entry)
1 6
2 39
3 188
4 861
5 3510
6 13623
7 49524
8 172893
9 577728
10 1868109
11 5847054
12 17814077
13 52890972
14 153535575
15 436304266
16 1216282521
17 3329926392
18 8966547362
19 23769745656
20 62101564899
21 160033141790
22 407108557269