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A321578 as a simple table

na(n)
11
21
32
42
53
63
74
84
94
105
115
125
136
146
156
166
177
187
197
207
217
228
238
248
258
269
279
289
299
309
319
3210
3310
3410
3510
3610
3710
3811
3911
4011
4111
4211
4311
4411
4512
4612
4712
4812
4912
5012
5112
5213
5313
5413
5513
5613
5713
5813
5913
6014
6114
6214
6314
6414
6514
6614
6715
6815
6915
7015
7115
7215
7315
7415

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