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A299749 as a simple table

na(n)
18
288
3375
41998
511733
664703
7358219
82010841
911248655
1062879257
11351925463
121969646529
1311022486199
1461689352653
15345264233247
161932370500069
1710815131485601
1860530599812081
19338780442090221
201896102910584521

[8,88,375,1998,11733,64703,358219,2010841,
 11248655,62879257,351925463,1969646529,
 11022486199,61689352653,345264233247,
 1932370500069,10815131485601,60530599812081,
 338780442090221,1896102910584521]