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A224540 as a simple table

na(n)
01
12
24
312
436
5106
6249
7613
81732
98028
1023348
1169370
12210807
13634839
141893582
155686389
1617031777
1751073675
18153185957
19459516225
201378707224
214135278456

[1,2,4,12,36,106,249,613,1732,8028,23348,69370,
 210807,634839,1893582,5686389,17031777,51073675,
 153185957,459516225,1378707224,4135278456]