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A031954 as a simple table

na(n)
19
211
312
413
514
615
716
817
918
1019
1121
1222
1323
1424
1525
1626
1727
1828
1929
2031
2132
2233
2334
2435
2536
2637
2738
2839
2941
3042
3143
3244
3345
3446
3547
3648
3749
3851
3952
4053
4154
4255
4356
4457
4558
4659
4761
4862
4963
5064
5165
5266
5367
5468
5569
5671
5772
5873
5974
6075
6176
6277
6378
6479
6581
6682
6790
6892
6993
7094
7195
7296
7397
7498
75100
76101
77109
78111

[9,11,12,13,14,15,16,17,18,19,21,22,23,24,25,26,
 27,28,29,31,32,33,34,35,36,37,38,39,41,42,43,44,
 45,46,47,48,49,51,52,53,54,55,56,57,58,59,61,62,
 63,64,65,66,67,68,69,71,72,73,74,75,76,77,78,79,
 81,82,90,92,93,94,95,96,97,98,100,101,109,111]