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A183305 as a simple table

na(n)
12
26
319
455
5178
6572
71798
85700
918064
1057249
11181433
12574924
131821857
145773450
1518295845
1657978643
17183731482
18582236576
191845081304
205846978390
2118528805856
2258716935815
23186071279593
24589651361292
251868578146701
265921438527588

[2,6,19,55,178,572,1798,5700,18064,57249,181433,
 574924,1821857,5773450,18295845,57978643,
 183731482,582236576,1845081304,5846978390,
 18528805856,58716935815,186071279593,589651361292,
 1868578146701,5921438527588]