# A168905 (b-file synthesized from sequence entry)
0 1
1 36
2 1260
3 44100
4 1543500
5 54022500
6 1890787500
7 66177562500
8 2316214687500
9 81067514062500
10 2837362992187500
11 99307704726562500
12 3475769665429687500
13 121651938290039062500
14 4257817840151367187500
15 149023624405297851562500