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A218233 as a simple table

na(n)
11
23
33
47
515
67
713
861
961
1013
1125
12241
13497
14241
1525
1649
17961
183969
193969
20961
2149
2297
233839
2431739
2563309
2631739
273839
2897
29191
3015327
31253825
321012165
331012165
34253825
3515327
36191
37375
3861185
392029849
4016187585
4132362849
4216187585
432029849
4461185

[1,3,3,7,15,7,13,61,61,13,25,241,497,241,25,49,
 961,3969,3969,961,49,97,3839,31739,63309,31739,
 3839,97,191,15327,253825,1012165,1012165,253825,
 15327,191,375,61185,2029849,16187585,32362849,
 16187585,2029849,61185]