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A370546 as a simple table

na(n)
11
25
325
4125
5625
63130
715800
881625
9443125
102609375
1116984500
12121023875
13914745625
147093331250
1555129765625
16424092582500
173212747690625
1823952422065625
19176059004593750
201279867522656250
219237023201350000
2266454031585359375
23478427499949687500
243458191615224687500

[1,5,25,125,625,3130,15800,81625,443125,2609375,
 16984500,121023875,914745625,7093331250,
 55129765625,424092582500,3212747690625,
 23952422065625,176059004593750,1279867522656250,
 9237023201350000,66454031585359375,
 478427499949687500,3458191615224687500]