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A276230 as a simple table

na(n)
01
12
24
312
436
5144
6720
73600
825200
9176400
101587600
1117463600
12192099600
132497294800
1432464832400
15551902150800
169382336563600
17178264394708400
183387023499459600
1977901540487570800
201791735431214128400
2144793385780353210000
221299008187630243090000

[1,2,4,12,36,144,720,3600,25200,176400,1587600,
 17463600,192099600,2497294800,32464832400,
 551902150800,9382336563600,178264394708400,
 3387023499459600,77901540487570800,
 1791735431214128400,44793385780353210000,
 1299008187630243090000]