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A301640 as a simple table

na(n)
1-1
20
31
42
53
63
74
84
94
105
115
125
135
146
156
166
176
186
196
207
217
227
236
247
257
267
276
288
298
308
318
328
338
348
358
368
378
388
398
409
418
429
439
449
459
468
479
489
497
509
517
529
539
548
559
5610
5710
5810
5910
6010
6110
6210
639
6410
6510
6610
679
6810
6910
7010

[-1,0,1,2,3,3,4,4,4,5,5,5,5,6,6,6,6,6,6,7,7,7,6,7,
 7,7,6,8,8,8,8,8,8,8,8,8,8,8,8,9,8,9,9,9,9,8,9,9,7,
 9,7,9,9,8,9,10,10,10,10,10,10,10,9,10,10,10,9,10,
 10,10]