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A270697 as a simple table

na(n)
12047
242799
390751
4256999
5271951
6476971
7514447
8741751
9877099
10916327
111302451
121325843
131397419
141441091
151507963
161530787
171907851
182004403
192205967
202304167
212748023
222811271
232953711
242976487
253090091
263116107
274469471
284863127
295016191

[2047,42799,90751,256999,271951,476971,514447,
 741751,877099,916327,1302451,1325843,1397419,
 1441091,1507963,1530787,1907851,2004403,2205967,
 2304167,2748023,2811271,2953711,2976487,3090091,
 3116107,4469471,4863127,5016191]