login

A109347 as a simple table

na(n)
12
21
349
417
51441
619
737969
8353
919729
10421
1124325489
12481
13609554401
1410039
15216001
16198593
17381405156481
1812979
199536162033329
20288961
2118306583
226125659
235960417405949649
24346561
25103408180634401
26152787181
273853528045489
28179655841
2993132223146359169121

[2,1,49,17,1441,19,37969,353,19729,421,24325489,
 481,609554401,10039,216001,198593,381405156481,
 12979,9536162033329,288961,18306583,6125659,
 5960417405949649,346561,103408180634401,152787181,
 3853528045489,179655841,93132223146359169121]