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A205954 as a simple table

na(n)
1256
22120
32120
417920
525512
617920
7151824
8310912
9310912
10151824
111285076
123825072
135550256
143825072
151285076
1610876432
1747118720
18101702648
19101702648
2047118720
2110876432
2292062852
23583496376
241912957100
252938041784
261912957100

[256,2120,2120,17920,25512,17920,151824,310912,
 310912,151824,1285076,3825072,5550256,3825072,
 1285076,10876432,47118720,101702648,101702648,
 47118720,10876432,92062852,583496376,1912957100,
 2938041784,1912957100]