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A331574 as a simple table

na(n)
00
10
20
30
40
50
61
74
816
940
10100
11200
12400
13700
141225
151960
163136
174704
187056
1910080
2014400
2119800
2227225
2336300
2448400
2562920
2681796
27104104
28132496
29165620
30207025
31254800
32313600
33380800
34462400
35554880
36665856
37790704
38938961
391104660
401299600
411516200
421768900
432048200
442371600

[0,0,0,0,0,0,1,4,16,40,100,200,400,700,1225,1960,
 3136,4704,7056,10080,14400,19800,27225,36300,
 48400,62920,81796,104104,132496,165620,207025,
 254800,313600,380800,462400,554880,665856,790704,
 938961,1104660,1299600,1516200,1768900,2048200,
 2371600]