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A038254 as a simple table

na(n)
01
15
212
325
4120
5144
6125
7900
82160
91728
10625
116000
1221600
1334560
1420736
153125
1637500
17180000
18432000
19518400
20248832
2115625
22225000
231350000
244320000
257776000
267464960
272985984
2878125
291312500
309450000
3137800000
3290720000

[1,5,12,25,120,144,125,900,2160,1728,625,6000,
 21600,34560,20736,3125,37500,180000,432000,518400,
 248832,15625,225000,1350000,4320000,7776000,
 7464960,2985984,78125,1312500,9450000,37800000,
 90720000]