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A297996 as a simple table

na(n)
12
23
35
42
56
63
77
84
98
105
119
126
1310
147
1511
168
1712
189
1913
2010
2114
2211
2315
2412
2516
2613
2717
2814
2918
3015
3119
3216
3320
3417
3521
3618
3722
3819
3923
4020
4124
4221
4325
4422
4526
4623
4727
4824
4928
5025
5129
5226
5330
5427
5531
5628
5732
5829
5933
6030
6134
6231
6335
6432
6536
6633
6737
6834
6938
7035

[2,3,5,2,6,3,7,4,8,5,9,6,10,7,11,8,12,9,13,10,14,
 11,15,12,16,13,17,14,18,15,19,16,20,17,21,18,22,
 19,23,20,24,21,25,22,26,23,27,24,28,25,29,26,30,
 27,31,28,32,29,33,30,34,31,35,32,36,33,37,34,38,
 35]