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A181202 as a simple table

na(n)
10
2168
316632
41729728
5199536480
625241364720
73445446284280
8500598983364480
976591644454765440
1012237255920840932800
112028351316862121451200
12346968438887939861076480
1360995474427232155123331200

[0,168,16632,1729728,199536480,25241364720,
 3445446284280,500598983364480,76591644454765440,
 12237255920840932800,2028351316862121451200,
 346968438887939861076480,
 60995474427232155123331200]