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A233283 as a simple table

na(n)
11
23
312
460
5120
6840
72520
812600
9239400
102633400
115266800
1215800400
13458211600
147789597200
15288215096400
163746796253200
1726227573772400
18131137868862000
191049102950896000
2024129367870608000
211906220061778032000
2278155022532899312000
236955797005428038768000

[1,3,12,60,120,840,2520,12600,239400,2633400,
 5266800,15800400,458211600,7789597200,
 288215096400,3746796253200,26227573772400,
 131137868862000,1049102950896000,
 24129367870608000,1906220061778032000,
 78155022532899312000,6955797005428038768000]