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A004141 as a simple table

na(n)
11
22
38
448
5256
61280
76912
839424
9212992
101118208
116553600
1236765696
13199229440
141133117440
156499598336
1636175872000
17200655503360
181167945891840
196620826304512
2036681168191488
21212364657950720
221219998345330688
236864598984556544
2438958828003262464
25226089827240509440
261287455960675123200

[1,2,8,48,256,1280,6912,39424,212992,1118208,
 6553600,36765696,199229440,1133117440,6499598336,
 36175872000,200655503360,1167945891840,
 6620826304512,36681168191488,212364657950720,
 1219998345330688,6864598984556544,
 38958828003262464,226089827240509440,
 1287455960675123200]