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A292061 as a simple table

na(n)
10
20
30
46
560
6300
71050
82940
97056
1015120
1129700
1254450
1394380
14156156
15248430
16382200
17571200
18832320
191186056
201656990
212274300
223072300
234091010
245376756
256982800
268970000
2711407500
2814373450
2917955756
3022252860
3127374550
3233442800
3340592640
3448973056
3558747920

[0,0,0,6,60,300,1050,2940,7056,15120,29700,54450,
 94380,156156,248430,382200,571200,832320,1186056,
 1656990,2274300,3072300,4091010,5376756,6982800,
 8970000,11407500,14373450,17955756,22252860,
 27374550,33442800,40592640,48973056,58747920]