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A340242 as a simple table

na(n)
21
31
43
51
65
78
81
97
1021
1120
121
139
1440
1581
1647
171
1811
1965
20208
21295
22107
231
2413
2596
26425
271021
281037
29238
301
3115
32133
33756
342621
354831
363555
37520
381
3917
40176
411225
425611
4315569
4422276
4511961
461121
471
4819
49225
501856
5110627
5240091
5390085
54100768
5539667
562391

[1,1,3,1,5,8,1,7,21,20,1,9,40,81,47,1,11,65,208,
 295,107,1,13,96,425,1021,1037,238,1,15,133,756,
 2621,4831,3555,520,1,17,176,1225,5611,15569,22276,
 11961,1121,1,19,225,1856,10627,40091,90085,100768,
 39667,2391]