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A127262 as a simple table

na(n)
02
12
228
380
4496
51952
69856
743136
8204544
9926720
104307968
1119736576
1291168768
13419176448
141932378112
158894873600
1640978284544
17188695052288
18869129519104
194002599665664
2018434753560576
2184900703109120

[2,2,28,80,496,1952,9856,43136,204544,926720,
 4307968,19736576,91168768,419176448,1932378112,
 8894873600,40978284544,188695052288,869129519104,
 4002599665664,18434753560576,84900703109120]