# A069440 (b-file synthesized from sequence entry)
1 0
2 2
3 16
4 88
5 414
6 1810
7 7616
8 31376
9 127710
10 516170
11 2077552
12 8341288
13 33440190
14 133941922
15 536205056
16 2145876128
17 8586053694
18 34350369050
19 137416333936
20 549701205496
21 2198891419230
22 8795774741170
23 35183603690432
24 140735633277488
25 562945474867230