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A169715 as a simple table

na(n)
01
16
266
3996
418306
5384156
68848236
7218040696
85651108226
9152254667436
104229523740916
11120430899525096
123499628148747756
13103446306284890536
143102500089343886696
1594219208840385966096
162892652835496484004226
1789662253086458906345036

[1,6,66,996,18306,384156,8848236,218040696,
 5651108226,152254667436,4229523740916,
 120430899525096,3499628148747756,
 103446306284890536,3102500089343886696,
 94219208840385966096,2892652835496484004226,
 89662253086458906345036]