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A049996 as a simple table

na(n)
11
21
31
43
51
63
73
84
93
101
115
124
133
146
155
161
173
187
196
203
214
228
237
243
251
265
279
288
294
303
316
3210
339
345
351
363
377
3811
3910
406
413
424
438
4412
4511
467
473
481
495
509
5113
5212
538
544
553
566
5710
5814
5913
609
615
621
633
647
6511
6615
6714
6810
696
703
714
728
7312
7416
7515
7611
777
783
791
805
819
8213
8317

[1,1,1,3,1,3,3,4,3,1,5,4,3,6,5,1,3,7,6,3,4,8,7,3,
 1,5,9,8,4,3,6,10,9,5,1,3,7,11,10,6,3,4,8,12,11,7,
 3,1,5,9,13,12,8,4,3,6,10,14,13,9,5,1,3,7,11,15,14,
 10,6,3,4,8,12,16,15,11,7,3,1,5,9,13,17]