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A223427 as a simple table

na(n)
1120
21648
325436
4394736
56256832
698783592
71575629948
824993296408
9399339124688
106343618034616
11101407143454528
121611628793976896
1325766710390525620
14409564700700266752
156548402342102019564

[120,1648,25436,394736,6256832,98783592,
 1575629948,24993296408,399339124688,6343618034616,
 101407143454528,1611628793976896,
 25766710390525620,409564700700266752,
 6548402342102019564]