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A040016 as a simple table

na(n)
12
27
319
453
5139
6401
71093
82971
98101
1022013
1159863
12162751
13442399
141202603
153269011
168886109
1724154939
1865659969
19178482289
20485165141
211318815713
223584912833
239744803443
2426489122081
2572004899319
26195729609407
27532048240573
281446257064289
293931334297131

[2,7,19,53,139,401,1093,2971,8101,22013,59863,
 162751,442399,1202603,3269011,8886109,24154939,
 65659969,178482289,485165141,1318815713,
 3584912833,9744803443,26489122081,72004899319,
 195729609407,532048240573,1446257064289,
 3931334297131]