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A126274 as a simple table

na(n)
01
115
272
3220
4525
51071
61960
73312
85265
97975
1011616
1116380
1222477
1330135
1439600
1551136
1665025
1781567
18101080
19123900
20150381
21180895
22215832
23255600
24300625
25351351
26408240
27471772
28542445
29620775
30707296
31802560
32907137
331021615

[1,15,72,220,525,1071,1960,3312,5265,7975,11616,
 16380,22477,30135,39600,51136,65025,81567,101080,
 123900,150381,180895,215832,255600,300625,351351,
 408240,471772,542445,620775,707296,802560,907137,
 1021615]