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A120788 as a simple table

na(n)
01
13
27
351
4109
5415
6863
713379
827473
9107461
10219121
111723575
123499153
1313810887
1427956079
15884899683
161787478201
177085090409
1814289590493
19113433092349
20228507214803
21907912292457
221827259905369

[1,3,7,51,109,415,863,13379,27473,107461,219121,
 1723575,3499153,13810887,27956079,884899683,
 1787478201,7085090409,14289590493,113433092349,
 228507214803,907912292457,1827259905369]