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A026754 as a simple table

na(n)
01
12
25
310
424
548
6114
7228
8540
91080
102558
115116
1212133
1324266
1457658
15115316
16274600
17549200
181310817
192621634
206271788
2112543576
2230076629
2360153258
24144550655
25289101310
26696176322
271392352644
283359516328

[1,2,5,10,24,48,114,228,540,1080,2558,5116,12133,
 24266,57658,115316,274600,549200,1310817,2621634,
 6271788,12543576,30076629,60153258,144550655,
 289101310,696176322,1392352644,3359516328]