# A293708 (b-file synthesized from sequence entry)
1 1
2 4
3 16
4 36
5 144
6 576
7 3600
8 14400
9 32400
10 129600
11 291600
12 1166400
13 8643600
14 34574400
15 77792400
16 84272400
17 311169600
18 337089600
19 700131600
20 2800526400
21 179233689600
22 202338032400
23 809352129600