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A273449 as a simple table

na(n)
01
15
29
321
421
553
653
773
885
9141
10141
11161
12185
13257
14261
15229
16297
17445
18421
19437
20497
21597
22597
23557
24657
25965
26925
27961
281029
291217
301237
311189
321349
331665
341741
351729
361829
371849
382025
391957
402117
412569
422637
432585
442829
452769
462993
472861
483149
493505

[1,5,9,21,21,53,53,73,85,141,141,161,185,257,261,
 229,297,445,421,437,497,597,597,557,657,965,925,
 961,1029,1217,1237,1189,1349,1665,1741,1729,1829,
 1849,2025,1957,2117,2569,2637,2585,2829,2769,2993,
 2861,3149,3505]