# A186369 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 4
4 20
5 100
6 568
7 3480
8 23552
9 172280
10 1369600
11 11687996
12 107154944
13 1046876220
14 10891574272
15 119977808752
16 1397745975296
17 17147547551920
18 221248695107584
19 2992325932512948
20 42370119842398208
21 626422742409351380
22 9659199474524225536
23 154997830582262971784