# A067002 (b-file synthesized from sequence entry)
0 1
1 3
2 21
3 77
4 1155
5 4389
6 33649
7 129789
8 4023459
9 15646785
10 122044923
11 477084699
12 7474326951
13 29322359577
14 230389968105
15 906200541213
16 57090634096419
17 225004263791769
18 1775033636579511
19 7006711723340175
20 110706045228774765