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A089928 as a simple table

na(n)
01
12
24
310
425
560
6144
7348
8841
92030
104900
1111830
1228561
1368952
14166464
15401880
16970225
172342330
185654884
1913652098
2032959081
2179570260
22192099600
23463769460
241119638521
252703046502
266525731524
2715754509550
2838034750625
2991824010800

[1,2,4,10,25,60,144,348,841,2030,4900,11830,28561,
 68952,166464,401880,970225,2342330,5654884,
 13652098,32959081,79570260,192099600,463769460,
 1119638521,2703046502,6525731524,15754509550,
 38034750625,91824010800]