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A263708 as a simple table

na(n)
1569
218995
3474101
414115520
5452888405
614143461755
7445447784440
814172257092592
9454737017844040
1014624541206729483
11472474884440064077
1215320841681004133632
13498414099492357284253
1416258226314270163231635

[569,18995,474101,14115520,452888405,14143461755,
 445447784440,14172257092592,454737017844040,
 14624541206729483,472474884440064077,
 15320841681004133632,498414099492357284253,
 16258226314270163231635]