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A162990 as a simple table

na(n)
14
236
39
4576
5144
664
714400
83600
91600
10900
11518400
12129600
1357600
1432400
1520736
1625401600
176350400
182822400
191587600
201016064
21705600
221625702400
23406425600
24180633600
25101606400
2665028096
2745158400
2833177600
29131681894400

[4,36,9,576,144,64,14400,3600,1600,900,518400,
 129600,57600,32400,20736,25401600,6350400,2822400,
 1587600,1016064,705600,1625702400,406425600,
 180633600,101606400,65028096,45158400,33177600,
 131681894400]