# A337900 (b-file synthesized from sequence entry)
1 1
2 16
3 225
4 3136
5 44100
6 627264
7 9018009
8 130873600
9 1914762564
10 28210561600
11 418151049316
12 6230734868736
13 93271169290000
14 1401915345465600
15 21147754404155625
16 320042195924198400
17 4857445984927644900
18 73916947787011560000
19 1127482124965160372100