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A101634 as a simple table

na(n)
16
25
36
49
520
675
7414
82849
922728
10204471
112044610
1222490589
13269886924
143508529843
1549119417606
16736791263865
1711788660221584
18200407223766639
193607330027799178
2068539270528184021
211370785410563680020

[6,5,6,9,20,75,414,2849,22728,204471,2044610,
 22490589,269886924,3508529843,49119417606,
 736791263865,11788660221584,200407223766639,
 3607330027799178,68539270528184021,
 1370785410563680020]