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A365542 as a simple table

na(n)
10
21
32
46
510
628
748
8116
9224
10480
11920
122000
133840
147984
1515936
1632320
1763968
18130176
19258304
20521920
211041664
222089472
234171392
248377856
2516726528
2633509632
2767004416
28134129664
29268111360
30536705024
311072961536
322146941952
334293509120
348588414976

[0,1,2,6,10,28,48,116,224,480,920,2000,3840,7984,
 15936,32320,63968,130176,258304,521920,1041664,
 2089472,4171392,8377856,16726528,33509632,
 67004416,134129664,268111360,536705024,1072961536,
 2146941952,4293509120,8588414976]