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A318281 as a simple table

na(n)
11
21
31
41
54
61
74
81
94
104
117
121
137
141
157
161
177
184
191
204
211
224
234
247
257
2610
271
2810
294
307
314
321
334
344
357
3610
3710
3813
397
401
417
424
4313
447
4510
467
477
4810
4913
5010
511
5210
534
5413
557
5610
577
5810
5910
6013
617
6213
6313
6416
6510
667
6710

[1,1,1,1,4,1,4,1,4,4,7,1,7,1,7,1,7,4,1,4,1,4,4,7,
 7,10,1,10,4,7,4,1,4,4,7,10,10,13,7,1,7,4,13,7,10,
 7,7,10,13,10,1,10,4,13,7,10,7,10,10,13,7,13,13,16,
 10,7,10]