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A298577 as a simple table

na(n)
11
27
315
425
547
6113
7261
8601
91397
103223
117501
1217523
1340935
1495683
15223799
16523857
171226779
182873985
196734933
2015786173
2137008905
2286776771
23203494869
24477250155
251119367539
262625588427
276158890175
2814447602189
2933892459607
3079509969725

[1,7,15,25,47,113,261,601,1397,3223,7501,17523,
 40935,95683,223799,523857,1226779,2873985,6734933,
 15786173,37008905,86776771,203494869,477250155,
 1119367539,2625588427,6158890175,14447602189,
 33892459607,79509969725]