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A087814 as a simple table

na(n)
01
11
213
315
425
539
647
751
869
981
10101
11139
12249
13261
14275
15291
16739
171243
182243

[1,1,13,15,25,39,47,51,69,81,101,139,249,261,275,
 291,739,1243,2243]