# A048711 (b-file synthesized from sequence entry)
0 7
1 27
2 119
3 427
4 1799
5 6939
6 30583
7 109227
8 458759
9 1769499
10 7798903
11 27984299
12 117901063
13 454761243
14 2004318071
15 7158278827
16 30064771079
17 115964117019
18 511101108343
19 1833951035819
20 7726646167303