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A047224 as a simple table

na(n)
01
12
27
36
45
510
610
79
814
910
1013
1114
1213
1317
1422
1517
1617
1719
1821
1925
2022
2125
2226
2326
2425
2526
2634
2733
2829
2935
3034
3133
3234
3334
3437
3538
3637
3741
3843
3941
4041
4143
4247
4349
4449
4555
4649
4753
4852
4950
5062
5158
5253
5358
5457
5557
5661
5758
5861
5962
6061
6165
6267
6374
6465
6567
6675
6773
6876
6973
7073

[1,2,7,6,5,10,10,9,14,10,13,14,13,17,22,17,17,19,
 21,25,22,25,26,26,25,26,34,33,29,35,34,33,34,34,
 37,38,37,41,43,41,41,43,47,49,49,55,49,53,52,50,
 62,58,53,58,57,57,61,58,61,62,61,65,67,74,65,67,
 75,73,76,73,73]