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A003598 as a simple table

na(n)
11
25
311
425
555
6121
7125
8275
9605
10625
111331
121375
133025
143125
156655
166875
1714641
1815125
1915625
2033275
2134375
2273205
2375625
2478125
25161051
26166375
27171875
28366025
29378125
30390625
31805255
32831875
33859375
341771561
351830125
361890625

[1,5,11,25,55,121,125,275,605,625,1331,1375,3025,
 3125,6655,6875,14641,15125,15625,33275,34375,
 73205,75625,78125,161051,166375,171875,366025,
 378125,390625,805255,831875,859375,1771561,
 1830125,1890625]