# A151719 (b-file synthesized from sequence entry)
0 0
1 6
2 72
3 582
4 4032
5 25542
6 153048
7 881118
8 4925616
9 26909934
10 144356280
11 762839334
12 3981064368
13 20556000822
14 105173637672
15 533839505646
16 2690761186608
17 13478479905486
18 67142893855752
19 332807521103670