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A233438 as a simple table

na(n)
00
12
26
330
4210
52310
630030
7510510
89699690
9223092870
106469693230
11200560490130
122153462358810
1372490129383210
141958274892758030
1558665460642891410
1650035643372444730
1719221664375883039070
181123712842678138983270
1927456249893723439879090
20350421246400567367415390

[0,2,6,30,210,2310,30030,510510,9699690,223092870,
 6469693230,200560490130,2153462358810,
 72490129383210,1958274892758030,58665460642891410,
 50035643372444730,19221664375883039070,
 1123712842678138983270,27456249893723439879090,
 350421246400567367415390]