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A162925 as a simple table

na(n)
01
15
220
380
4310
51200
64650
718000
869690
9269820
101044630
114044420
1215658470
1360623640
14234711810
15908715240
163518201250
1713621143060
1852735907790
19204173464860
20790482339630
213060448278480
2211848896802170
2345874441471680

[1,5,20,80,310,1200,4650,18000,69690,269820,
 1044630,4044420,15658470,60623640,234711810,
 908715240,3518201250,13621143060,52735907790,
 204173464860,790482339630,3060448278480,
 11848896802170,45874441471680]