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A027542 as a simple table

na(n)
27
352
4231
5806
62451
76840
818031
945682
10112443
11270788
12641031
131496574
143453859
157893232
1617886687
1740233578
1889908875
19199746108
20441441655
21970971190
222126500467
234638886952
2410083091791
2521843918306
2647177512411
27101602798900
28218238002151
29467614538222

[7,52,231,806,2451,6840,18031,45682,112443,270788,
 641031,1496574,3453859,7893232,17886687,40233578,
 89908875,199746108,441441655,970971190,2126500467,
 4638886952,10083091791,21843918306,47177512411,
 101602798900,218238002151,467614538222]