# A012181 (b-file synthesized from sequence entry)
0 1
1 6
2 184
3 13360
4 1770880
5 373587200
6 115086003200
7 48784879769600
8 27245388132352000
9 19392357120188416000
10 17137521906875269120000
11 18411376349575875461120000
12 23632217190341837269237760000
13 35718167409293109428879360000000