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A347503 as a simple table

na(n)
15
213
329
457
5115
6229
7453
8897
91775
103513
116957
1213785
1327331
1454221
15107629
16213761
17424767
18844465
191679605
203342057
216652563
2213247093
2326387445
2452578561
25104796015
26208927849
27416634077
28831021241
291657909763
303308218269
316602455645
3213179196417

[5,13,29,57,115,229,453,897,1775,3513,6957,13785,
 27331,54221,107629,213761,424767,844465,1679605,
 3342057,6652563,13247093,26387445,52578561,
 104796015,208927849,416634077,831021241,
 1657909763,3308218269,6602455645,13179196417]