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A123613 as a simple table

na(n)
01
14
220
368
4175
5392
6786
71440
82475
94036
106292
119464
1213805
1319600
1427200
1536996
1649419
1764980
1884238
19107800
20136367
21170696
22211600
23260000
24316881
25383292
26460404
27549460
28651775
29768800
30902066
311053184
321223915
331416108
341631700
351872792
362141581

[1,4,20,68,175,392,786,1440,2475,4036,6292,9464,
 13805,19600,27200,36996,49419,64980,84238,107800,
 136367,170696,211600,260000,316881,383292,460404,
 549460,651775,768800,902066,1053184,1223915,
 1416108,1631700,1872792,2141581]