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A301346 as a simple table

na(n)
02
12
25
337
4577
514401
639877
7251501
895629553
9131681894401
1013168189440001
111593350922240001
122271708245569901
1338775788043632640001
142404319663572286441
151272170577304043929
162938007628841577533852349
1713980942259426143240713449
181107848353183710355135404972973
1920831587158104092560535861261

[2,2,5,37,577,14401,39877,251501,95629553,
 131681894401,13168189440001,1593350922240001,
 2271708245569901,38775788043632640001,
 2404319663572286441,1272170577304043929,
 2938007628841577533852349,
 13980942259426143240713449,
 1107848353183710355135404972973,
 20831587158104092560535861261]