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A324485 as a simple table

na(n)
11
20
35
46
524
640
7120
8250
9640
101452
113600
128510
1320880
1450460
15124024
16303750
17750120
181853120
194600200
2011437548
2128527320
2271281800
23178526880
24447893250
251125750120
262833844040
277144449920
2818036271740
2945591631800
30115381449692
31292329067800
32741410192250

[1,0,5,6,24,40,120,250,640,1452,3600,8510,20880,
 50460,124024,303750,750120,1853120,4600200,
 11437548,28527320,71281800,178526880,447893250,
 1125750120,2833844040,7144449920,18036271740,
 45591631800,115381449692,292329067800,
 741410192250]