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A040440 as a simple table

na(n)
021
12
242
32
442
52
642
72
842
92
1042
112
1242
132
1442
152
1642
172
1842
192
2042
212
2242
232
2442
252
2642
272
2842
292
3042
312
3242
332
3442
352
3642
372
3842
392
4042
412
4242
432
4442
452
4642
472
4842
492
5042
512
5242
532
5442
552
5642
572
5842
592
6042
612
6242
632
6442
652
6642
672
6842
692
7042
712
7242
732
7442

[21,2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,
 2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,
 2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42,
 2,42,2,42,2,42,2,42,2,42,2,42,2,42,2,42]