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A281374 as a simple table

na(n)
01
1-48
2432
33264
49456
521600
639744
766432
8105840
9147984
10220320
11281664
12393792
13475104
14646272
15743040
16980592
171091232
181432944
191536960
201965600
212118144
222649024
232761344
243516480
253557040
264433184
274594560
285575296
295603040
306998400
316864384
328407152
338494848
3410085472
359918720
3612319152

[1,-48,432,3264,9456,21600,39744,66432,105840,
 147984,220320,281664,393792,475104,646272,743040,
 980592,1091232,1432944,1536960,1965600,2118144,
 2649024,2761344,3516480,3557040,4433184,4594560,
 5575296,5603040,6998400,6864384,8407152,8494848,
 10085472,9918720,12319152]