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A061573 as a simple table

na(n)
11
26
360
4984
524720
6890640
743646400
82793409920
9226266566400
1022626660268800
112737825932441600
12394246934750592000
1366627731979077068800
1413059035467986283776000
152938282980298221523968000
16752200442956365632925696000
17217385928014390023602954240000

[1,6,60,984,24720,890640,43646400,2793409920,
 226266566400,22626660268800,2737825932441600,
 394246934750592000,66627731979077068800,
 13059035467986283776000,2938282980298221523968000,
 752200442956365632925696000,
 217385928014390023602954240000]