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A308543 as a simple table

na(n)
01
14
224
3176
41504
514528
6155520
71819392
823019008
9312413184
104518705152
1169279690752
121120856170496
1319062628335616
14339681346551808
156323658075340800
16122680376836358144
172474677219852288000
1851799971194270646272
191123121391647711035392

[1,4,24,176,1504,14528,155520,1819392,23019008,
 312413184,4518705152,69279690752,1120856170496,
 19062628335616,339681346551808,6323658075340800,
 122680376836358144,2474677219852288000,
 51799971194270646272,1123121391647711035392]