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A213993 as a simple table

na(n)
16327
2120133
3604639
43510112
59131098
629365738
756599992
8127113628
9255379242
10499365458
11784233528
121531915046
132261261860
143473439982
155267581848
168552671195
1711581885709
1817881607889
1923603815011
2034808081571

[6327,120133,604639,3510112,9131098,29365738,
 56599992,127113628,255379242,499365458,784233528,
 1531915046,2261261860,3473439982,5267581848,
 8552671195,11581885709,17881607889,23603815011,
 34808081571]