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A091760 as a simple table

na(n)
01
13
29
363
4555
56303
687381
71434891
827272727
9589486923
1014288622513
11384034370151
1211338782475059
13364911575317383
1412716046006693165
15477070508584969299
1619174662804725408175
17822058028667720327891

[1,3,9,63,555,6303,87381,1434891,27272727,
 589486923,14288622513,384034370151,11338782475059,
 364911575317383,12716046006693165,
 477070508584969299,19174662804725408175,
 822058028667720327891]