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A028302 as a simple table

na(n)
12
26
325
498
5462
61716
77293
827170
9111826
10487084
111822366
127696444
1330458900
14115000920
15455657715
161873956510
177649042610
1829135960700
19118406633730
20466052549820
211786037492460
227227122527560
2328473947932950

[2,6,25,98,462,1716,7293,27170,111826,487084,
 1822366,7696444,30458900,115000920,455657715,
 1873956510,7649042610,29135960700,118406633730,
 466052549820,1786037492460,7227122527560,
 28473947932950]