# A027545 (b-file synthesized from sequence entry)
3 1135
4 60335
5 1343716
6 18687638
7 193668105
8 1648053597
9 12219297310
10 82056694700
11 512502614251
12 3033393752507
13 17245138286520
14 95094751802370
15 512243600315149
16 2709201260006969
17 14119713363096754
18 72700387863373016
19 370461489754356015
20 1870587217868421015