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A197397 as a simple table

na(n)
11
217
381
4547
52571
613397
778101
8423957
92255611
1012173719
1166864485
12361733507
131953439221
1410607016995
1557610139877
16312099473393
171691511381425
189176876436943
1949767044309153
20269799849310117
211462993236129599

[1,17,81,547,2571,13397,78101,423957,2255611,
 12173719,66864485,361733507,1953439221,
 10607016995,57610139877,312099473393,
 1691511381425,9176876436943,49767044309153,
 269799849310117,1462993236129599]