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A223644 as a simple table

na(n)
12
24
34
47
516
67
711
849
949
1011
1116
12121
13218
14121
1516
1622
17256
18726
19726
20256
2122
2229
23484
242014
252962
262014
27484
2829
2937
30841
314904
329808
339808
344904
35841
3637
3746
381369
3910797
4028450
4136947
4228450
4310797
441369
4546
4656
472116
4821917
4974599
50120307
51120307
5274599

[2,4,4,7,16,7,11,49,49,11,16,121,218,121,16,22,
 256,726,726,256,22,29,484,2014,2962,2014,484,29,
 37,841,4904,9808,9808,4904,841,37,46,1369,10797,
 28450,36947,28450,10797,1369,46,56,2116,21917,
 74599,120307,120307,74599]