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A270221 as a simple table

na(n)
01
15
25
333
413
593
625
7161
853
9285
1065
11417
1293
13581
14129
15705
16229
17957
18241
191217
20269
211509
22305
231761
24397
252117
26433
272433
28517
292781
30625
312945
32965
333453
34977
353969
361005
374517
381041
395025
401133
415637
421169
436209
441253
456813
461361
477233
481677
497973

[1,5,5,33,13,93,25,161,53,285,65,417,93,581,129,
 705,229,957,241,1217,269,1509,305,1761,397,2117,
 433,2433,517,2781,625,2945,965,3453,977,3969,1005,
 4517,1041,5025,1133,5637,1169,6209,1253,6813,1361,
 7233,1677,7973]