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A351305 as a simple table

na(n)
11
21025
359050
41049600
59765626
660526250
7282475250
81074790400
93486843450
1010009766650
1125937424602
1261978880000
13137858491850
14289537131250
15576660215300
161100585369600
172015993900450
183574014536250
196131066257802
2010250001049600
2116680163512500
2226585860217050

[1,1025,59050,1049600,9765626,60526250,282475250,
 1074790400,3486843450,10009766650,25937424602,
 61978880000,137858491850,289537131250,
 576660215300,1100585369600,2015993900450,
 3574014536250,6131066257802,10250001049600,
 16680163512500,26585860217050]