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A254770 as a simple table

na(n)
111677
250173
3295516
41901784
511736086
672739438
7462927268
82925883667
918462927533
10116757027289
11738370654171
124667167731292
1329509145886141
14186576342001502
151179604295993078
167457967831756923
1747153169509714961

[11677,50173,295516,1901784,11736086,72739438,
 462927268,2925883667,18462927533,116757027289,
 738370654171,4667167731292,29509145886141,
 186576342001502,1179604295993078,7457967831756923,
 47153169509714961]