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A028923 as a simple table

na(n)
00
12
26
312
424
540
672
792
8132
9180
10276
11432
12756
13918
141232
151746
163290
174266

[0,2,6,12,24,40,72,92,132,180,276,432,756,918,
 1232,1746,3290,4266]