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A169721 as a simple table

na(n)
01
116
2100
3484
42116
58836
636100
7145924
8586756
92353156
109424900
1137724164
12150945796
13603881476
142415722500
159663283204
1638653919236
17154617249796
18618472144900
192473894871044
209895592067076
2139582393434116
22158329624068100
23633318596935684

[1,16,100,484,2116,8836,36100,145924,586756,
 2353156,9424900,37724164,150945796,603881476,
 2415722500,9663283204,38653919236,154617249796,
 618472144900,2473894871044,9895592067076,
 39582393434116,158329624068100,633318596935684]