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A284027 as a simple table

na(n)
01
13
27
311
419
555
6127
7235
8467
9759
101471
112667
125267
1311383
1419711
1555531
16127187
17238071
18476863
19690283
201118355
213285111
226291711
238388843
2416777427
2550332151
26100665023
27134219883
28268439699
29805314679
301610612991
312147483883
324294967507

[1,3,7,11,19,55,127,235,467,759,1471,2667,5267,
 11383,19711,55531,127187,238071,476863,690283,
 1118355,3285111,6291711,8388843,16777427,50332151,
 100665023,134219883,268439699,805314679,
 1610612991,2147483883,4294967507]