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A253294 as a simple table

na(n)
181
2558
3558
43844
53600
63844
726784
823546
923546
1026784
11186624
12167832
13140536
14167832
15186624
161296000
171184928
181029888
191029888
201184928
211296000
229000000
238243488
247431136
258153960
267431136
278243488
289000000
2962568000
3057474376

[81,558,558,3844,3600,3844,26784,23546,23546,
 26784,186624,167832,140536,167832,186624,1296000,
 1184928,1029888,1029888,1184928,1296000,9000000,
 8243488,7431136,8153960,7431136,8243488,9000000,
 62568000,57474376]