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A254847 as a simple table

na(n)
1192
2576
31632
44624
513328
638416
7110544
8318096
9913680
102624400
117549200
1221715600
1362425360
14179452816
15515960336
161483482256
174265261840
1812263347600
1935258287120
20101370918544
21291456195856
22837979129744
232409294812688

[192,576,1632,4624,13328,38416,110544,318096,
 913680,2624400,7549200,21715600,62425360,
 179452816,515960336,1483482256,4265261840,
 12263347600,35258287120,101370918544,291456195856,
 837979129744,2409294812688]