# A038784 (b-file synthesized from sequence entry)
1 4
2 9
3 16
4 64
5 196
6 1296
7 3600
8 35344
9 1397124
10 4804864
11 213218404
12 2754990144
13 9976014400
14 133023596176
15 6663770519184
16 342723467635264
17 1281107924034624
18 67756702226982976
19 963748303995476224
20 3643830108147610000
21 198705767966065582336
22 2876682497805092456704