# A347276 (b-file synthesized from sequence entry)
3 1
4 6
5 5
6 -15
7 49
8 -196
9 944
10 -5340
11 34716
12 -254760
13 2078856
14 -18620784
15 180973584
16 -1887504768
17 20887922304
18 -242111586816
19 2889841121280
20 -34586897978880
21 393722260047360
22 -3659128846433280
23 5687630494110720
24 1137542166526464000
25 -49644151627682304000