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A227615 as a simple table

na(n)
03
14
28
316
431
561
6122
7244
8487
9973
101946
113892
127783
1315565
1431130
1562259
16124517
17249033
18498066
19996131
201992262
213984524
227969047
2315938093
2431876185
2563752369
26127504737
27255009473
28510018945
291020037890
302040075780

[3,4,8,16,31,61,122,244,487,973,1946,3892,7783,
 15565,31130,62259,124517,249033,498066,996131,
 1992262,3984524,7969047,15938093,31876185,
 63752369,127504737,255009473,510018945,1020037890,
 2040075780]