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A086405 as a simple table

na(n)
01
14
218
384
4396
51872
68856
741904
8198288
9938304
104440096
1121010752
1299423936
13470479104
142226331008
1510535111424
1649852682496
17235905426432
181116316463616
195282466223104
2024996898556928
21118286594002944

[1,4,18,84,396,1872,8856,41904,198288,938304,
 4440096,21010752,99423936,470479104,2226331008,
 10535111424,49852682496,235905426432,
 1116316463616,5282466223104,24996898556928,
 118286594002944]