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A261256 as a simple table

na(n)
14
224
372
4160
5432
6896
72592
85632
912800
1026624
1161440
12124416
13278528
14622592
151376256
162949120
175971968
1812058624
1925690112
2060817408
21130023424
22262144000
23528482304
241107296256
252264924160
264586471424
279395240960
2819864223744
2940265318400
3083751862272

[4,24,72,160,432,896,2592,5632,12800,26624,61440,
 124416,278528,622592,1376256,2949120,5971968,
 12058624,25690112,60817408,130023424,262144000,
 528482304,1107296256,2264924160,4586471424,
 9395240960,19864223744,40265318400,83751862272]