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A353209 as a simple table

na(n)
418
546
6122
7326
8863
92252
105757
1114430
1235531
1386215
14206613
15490247
161153733
172696961
186268921

[18,46,122,326,863,2252,5757,14430,35531,86215,
 206613,490247,1153733,2696961,6268921]