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A222655 as a simple table

na(n)
04
120
2260
31300
44100
510004
620740
738420
865540
9104980
10160004
11234260
12331780
13456980
14614660
15810004
161048580
171336340
181679620
192085140
202560004
213111700
223748100
234477460
245308420
256250004
267311620
278503060
289834500
2911316500
3012960004
3114776340

[4,20,260,1300,4100,10004,20740,38420,65540,
 104980,160004,234260,331780,456980,614660,810004,
 1048580,1336340,1679620,2085140,2560004,3111700,
 3748100,4477460,5308420,6250004,7311620,8503060,
 9834500,11316500,12960004,14776340]