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A166863 as a simple table

na(n)
11
25
311
421
537
663
7105
8173
9283
10461
11749
121215
131969
143189
155163
168357
1713525
1821887
1935417
2057309
2192731
22150045
23242781
24392831
25635617
261028453
271664075
282692533
294356613
307049151
3111405769
3218454925
3329860699
3448315629
3578176333
36126491967

[1,5,11,21,37,63,105,173,283,461,749,1215,1969,
 3189,5163,8357,13525,21887,35417,57309,92731,
 150045,242781,392831,635617,1028453,1664075,
 2692533,4356613,7049151,11405769,18454925,
 29860699,48315629,78176333,126491967]