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A143697 as a simple table

na(n)
41
54
61
716
89
94
109
1136
121
1336
149
154
169
1736
181
19144
209
214
2281
2336
2425
2536
269
2716
2881
29144
301
31144
3281
3316
349
3536
3625
3736
3881
394
409
41144
421
43576
449
454
46225
4736
4825
49144
509
5164
5281
5336
5449
55144
569
5716
58225
59144
601
61324
6281
6316
649
6536
6625
6736
68225
694
709
71144
721
7336
74225

[1,4,1,16,9,4,9,36,1,36,9,4,9,36,1,144,9,4,81,36,
 25,36,9,16,81,144,1,144,81,16,9,36,25,36,81,4,9,
 144,1,576,9,4,225,36,25,144,9,64,81,36,49,144,9,
 16,225,144,1,324,81,16,9,36,25,36,225,4,9,144,1,
 36,225]