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A254777 as a simple table

na(n)
111677
255196
3295516
41667480
510062375
663224224
7399523689
82516653715
915940153378
10100822757319
11637477883084
124029891955749
1325481923685643
14161106860957630
151018615476900188
166440151906907028
1740717797932804217

[11677,55196,295516,1667480,10062375,63224224,
 399523689,2516653715,15940153378,100822757319,
 637477883084,4029891955749,25481923685643,
 161106860957630,1018615476900188,6440151906907028,
 40717797932804217]