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A291041 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
147
1513
168
1713
189
1913
2010
217
2211
2313
248
2513
2613
279
287
2913
3010
3113
328
3311
3413
357
369
3713
3813
3913
408
4113
427
4313
4411
459
4613
4713
488
497
5010
5113
5213
5313
549
5511
567
5713
5813
5913
6010
6113
6213
637
648
6513
6611
6713
6813
6913
707

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