# A135815 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 6
5 43
6 707
7 26396
8 2437224
9 598846437
10 419417521685
11 904349062852310
12 6075281872200844330
13 140389254096848971143999
14 10843844462460100434065782151
15 3088707655477705662835120169107312