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A303998 as a simple table

na(n)
10
20
31
42
53
64
74
85
93
106
115
126
138
147
155
167
177
186
198
2011
215
228
239
245
2510
268
277
288
297
305
317
3210
336
349
359
365
3711
3812
398
4013
4112
429
438
4415
459
4611
4712
4811
497
5010
519
5210
5314
549
5512
5612
5711
5811
5912
609
619
6212
638
645
6513
669
6710
6814
6910
7013
719
7215
7310
7412
759
7612
7711
789
7911
8013

[0,0,1,2,3,4,4,5,3,6,5,6,8,7,5,7,7,6,8,11,5,8,9,5,
 10,8,7,8,7,5,7,10,6,9,9,5,11,12,8,13,12,9,8,15,9,
 11,12,11,7,10,9,10,14,9,12,12,11,11,12,9,9,12,8,5,
 13,9,10,14,10,13,9,15,10,12,9,12,11,9,11,13]