# A000427 (b-file synthesized from sequence entry)
1 1
2 8
3 36
4 148
5 554
6 2024
7 7134
8 24796
9 84625
10 285784
11 953430
12 3151332
13 10314257
14 33457972
15 107557792
16 342732670
17 1082509680
18 3389190112
19 10518508294
20 32361863632