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A371421 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1213
1316
1417
1518
1619
1720
1821
1922
2024
2125
2226
2327
2428
2530
2631
2732
2833
2934
3035
3136
3237
3338
3439
3540
3641
3743
3845
3946
4047
4149
4250
4351
4452
4553
4655
4757
4858
4959
5061
5163
5264
5367
5468
5571
5673
5774
5879
5980
6081
6182
6289
6393
6496
6597
6698
67100
68101

[1,2,3,4,5,6,7,8,9,10,11,13,16,17,18,19,20,21,22,
 24,25,26,27,28,30,31,32,33,34,35,36,37,38,39,40,
 41,43,45,46,47,49,50,51,52,53,55,57,58,59,61,63,
 64,67,68,71,73,74,79,80,81,82,89,93,96,97,98,100,
 101]