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A301446 as a simple table

na(n)
18
2108
31008
49541
591370
6877044
78414314
880726964
9774477323
107430228709
1171284529536
12683893628760
136561177596757
1462947000071013
15603904519316269
165793773626269543
1755584635903151286
18533271050607294727

[8,108,1008,9541,91370,877044,8414314,80726964,
 774477323,7430228709,71284529536,683893628760,
 6561177596757,62947000071013,603904519316269,
 5793773626269543,55584635903151286,
 533271050607294727]