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A220450 as a simple table

na(n)
11
21
39
410
50
611
711
82
96
1012
1115
129
130
1417
1515
164
171
1817
192
2017
2117
221
2318
240
2516
2616
2715
287
2914
308
311
320
334
348
3511
3617
374
3815
394
404
4117
422
430
446
456
468
475
4810
493
5017
510
5211
533
5416
554
5611
578
5811
5911
604
6115
620
637
647
653
669
6718
6813
694
700
7116
7213
736
7411
7516
763
7716
7816
7911
808
810
825
835
8413
851
862
8712

[1,1,9,10,0,11,11,2,6,12,15,9,0,17,15,4,1,17,2,17,
 17,1,18,0,16,16,15,7,14,8,1,0,4,8,11,17,4,15,4,4,
 17,2,0,6,6,8,5,10,3,17,0,11,3,16,4,11,8,11,11,4,
 15,0,7,7,3,9,18,13,4,0,16,13,6,11,16,3,16,16,11,8,
 0,5,5,13,1,2,12]