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A281234 as a simple table

na(n)
10
248
3288
41680
59792
657072
7332640
81938768
911299968
1065861040
11383866272
122237336592
1313040153280
1476003583088
15442981345248
162581884488400
1715048325585152
1887708069022512
19511200088549920
202979492462277008
2117365754685112128
22101215035648395760

[0,48,288,1680,9792,57072,332640,1938768,11299968,
 65861040,383866272,2237336592,13040153280,
 76003583088,442981345248,2581884488400,
 15048325585152,87708069022512,511200088549920,
 2979492462277008,17365754685112128,
 101215035648395760]