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A316994 as a simple table

na(n)
12
21
33
45
510
64
78
811
96
107
1118
1224
1314
1416
1542
1643
1712
1813
1915
2036
219
2219
2320
2417
2523
2625
2721
2828
2922
3026
3133
3235
3337
3429
3540
3634
3727
3830
3950
4046
4131
4241
4354
4465
4570
4632
4776
4839
4981
5069
5145
5247
5348
54103
5553
5651
5749
5852
5956
6055
6157
62135
63121
6473
6559
6638
6758

[2,1,3,5,10,4,8,11,6,7,18,24,14,16,42,43,12,13,15,
 36,9,19,20,17,23,25,21,28,22,26,33,35,37,29,40,34,
 27,30,50,46,31,41,54,65,70,32,76,39,81,69,45,47,
 48,103,53,51,49,52,56,55,57,135,121,73,59,38,58]