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A267547 as a simple table

na(n)
12
227
3255
43527
551759
6852932
714954188
8273141379
95179064643
10100829282975
112002465966258
1240428770929803
13827090165579327
1417105221165373796
15357027788626167770
167510894690703464379
17159088048372227390425

[2,27,255,3527,51759,852932,14954188,273141379,
 5179064643,100829282975,2002465966258,
 40428770929803,827090165579327,17105221165373796,
 357027788626167770,7510894690703464379,
 159088048372227390425]