# A007327 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 0
6 5
7 20
8 69
9 200
10 521
11 1294
12 3126
13 7364
14 17309
15 40577
16 95460
17 224971
18 531368
19 1252664
20 2943095
21 6870029
22 15911618
23 36507381