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A259243 as a simple table

na(n)
19
221
348
4111
5255
6588
71353
83117
97176
1016527
1138055
1287636
13201801
14464709
151070112
162464239
175674575
1813067292
1930091017
2069292893
21159565944
22367444623
23846142455
241948476324
254486903689
2610332332661
2723793043728
2854790041711

[9,21,48,111,255,588,1353,3117,7176,16527,38055,
 87636,201801,464709,1070112,2464239,5674575,
 13067292,30091017,69292893,159565944,367444623,
 846142455,1948476324,4486903689,10332332661,
 23793043728,54790041711]