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A281465 as a simple table

na(n)
18
237
339
496
5207
6405
7897
81975
94154
108884
1119297
1241447
1388670
14190913
15411053
16882410
171895974
184078246
198765802
2018835918
2140491783
2287045948
23187087510
24402129300
25864407625
261858020929
273993687963
288584396666
2918452096569

[8,37,39,96,207,405,897,1975,4154,8884,19297,
 41447,88670,190913,411053,882410,1895974,4078246,
 8765802,18835918,40491783,87045948,187087510,
 402129300,864407625,1858020929,3993687963,
 8584396666,18452096569]