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A134894 as a simple table

na(n)
15
21
33
413
51
65
717
81
96
1020
111
127
1321
1419608
157
1622
17560
186
1923
20188
215
2223
23113
243
2522
2685
272
2822
2971
301
3120
3262
331
3419
3557
3683616
3716
3852
391449
4014
4149
42416
4310
4445
45228
466
4742
48160
493
5039
51126
521
5335
54106
551
5631
5793
58240699

[5,1,3,13,1,5,17,1,6,20,1,7,21,19608,7,22,560,6,
 23,188,5,23,113,3,22,85,2,22,71,1,20,62,1,19,57,
 83616,16,52,1449,14,49,416,10,45,228,6,42,160,3,
 39,126,1,35,106,1,31,93,240699]