# A275462 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 6
4 48
5 760
6 21840
7 1121568
8 104510336
9 18111498624
10 5966666196480
11 3794613745429760
12 4704698796461841408
13 11443317008255593064448
14 54831540882238864189229056
15 519046250316393184411087165440
16 9726643425055315256306341282775040