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A175455 as a simple table

na(n)
11
26
366
4300
58220
68820
7457380
81917720
917965080
1018600120
112320468920
122384502120
13412970037480
14422245703880
15430902992520
161756076802480
17516336630329520
18524676485052720
19192260441419366320
20194970060218934000
21197550649551855600
22200013939369644400

[1,6,66,300,8220,8820,457380,1917720,17965080,
 18600120,2320468920,2384502120,412970037480,
 422245703880,430902992520,1756076802480,
 516336630329520,524676485052720,
 192260441419366320,194970060218934000,
 197550649551855600,200013939369644400]