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A180270 as a simple table

na(n)
10
21025
3476073
427022500
5551536100
66129324225
745502479225
8253405810448
91137920432400
104322847530025
1114366776735025
1242801847892100
13116415023802948
14293153032943225
15691043521403025
161538402208782400

[0,1025,476073,27022500,551536100,6129324225,
 45502479225,253405810448,1137920432400,
 4322847530025,14366776735025,42801847892100,
 116415023802948,293153032943225,691043521403025,
 1538402208782400]