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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A263220 as a simple table

na(n)
17
2343
312601
4475539
522342751
61094138875
753375395657
82607171566653
9127682197727311
106256406902789159
11306545703110117209
1215020102223676251147
13735979598601461106119
1436062999023016301797227

[7,343,12601,475539,22342751,1094138875,
 53375395657,2607171566653,127682197727311,
 6256406902789159,306545703110117209,
 15020102223676251147,735979598601461106119,
 36062999023016301797227]