# A027278 (b-file synthesized from sequence entry)
1 2
2 8
3 60
4 312
5 2030
6 11752
7 74174
8 450292
9 2829898
10 17572000
11 110733420
12 695885000
13 4403631638
14 27874477216
15 177101756296
16 1126506215424
17 7182056699722
18 45847087891480
19 293141734241436
20 1876495434801400
21 12026885684352138
22 77161051350902456
23 495534832203481122