# A262480 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 8
5 32
6 192
7 1272
8 10176
9 90816
10 908160
11 9980160
12 119761920
13 1556766720
14 21794734080
15 326918753280
16 5230700052480
17 88921859604480
18 1600593472880640
19 30411275148656640
20 608225502973132800
21 12772735543856332800
22 281000181964839321600
23 6463004184741681561600
24 155112100433800357478400
25 3877802510833236993638400