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A065605 as a simple table

na(n)
04
18
216
340
4111
5306
6882
72563
87513
922170
1065602
11194695
12578949
131724117
145140568
1515340177
1645811041
17136886318
18409221920
191223856725
203661401440
2110956876415
2232796782398
2398189738332
24294021666926
25880564233896

[4,8,16,40,111,306,882,2563,7513,22170,65602,
 194695,578949,1724117,5140568,15340177,45811041,
 136886318,409221920,1223856725,3661401440,
 10956876415,32796782398,98189738332,294021666926,
 880564233896]