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A305032 as a simple table

na(n)
00
11
26
322
468
5190
6500
71260
83080
97350
1017220
1139732
1290552
13204204
14456456
151012440
162230800
174886310
1810647780
1923094500
2049884120
21107343236
22230205976
23492156392
241049212528
252230928700
264732273000
2710015777800
2821154820400
2944596287000
3093846099600

[0,1,6,22,68,190,500,1260,3080,7350,17220,39732,
 90552,204204,456456,1012440,2230800,4886310,
 10647780,23094500,49884120,107343236,230205976,
 492156392,1049212528,2230928700,4732273000,
 10015777800,21154820400,44596287000,93846099600]