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A269337 as a simple table

na(n)
16
274
3852
410210
5124466
61539739
719271229
8243392830
93095718114
1039591108117
11508549674595
126555349397662
1384743875128342
141098136390356477
1514258478535216226
16185450173389172712
172415532450075364094

[6,74,852,10210,124466,1539739,19271229,243392830,
 3095718114,39591108117,508549674595,6555349397662,
 84743875128342,1098136390356477,14258478535216226,
 185450173389172712,2415532450075364094]