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A123278 as a simple table

na(n)
00
16
2500
348114
44705960
5461049726
645177313500
74426907222634
8433791646851920
942507153656189046
104165267258462562500
11408153684094531891554
1239994895773202429477880
133919091632081792366665966
14384030985048163740834371500
1537631117443087185673897862874

[0,6,500,48114,4705960,461049726,45177313500,
 4426907222634,433791646851920,42507153656189046,
 4165267258462562500,408153684094531891554,
 39994895773202429477880,3919091632081792366665966,
 384030985048163740834371500,
 37631117443087185673897862874]