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A004319 as a simple table

na(n)
11
26
336
4220
51365
68568
754264
8346104
92220075
1014307150
1192561040
12600805296
133910797436
1425518731280
15166871334960
161093260079344
177174519270695
1847153358767970
19310325523515700
202044802197953900
2113488561475572645
2289067326568860640
23588671286046028640

[1,6,36,220,1365,8568,54264,346104,2220075,
 14307150,92561040,600805296,3910797436,
 25518731280,166871334960,1093260079344,
 7174519270695,47153358767970,310325523515700,
 2044802197953900,13488561475572645,
 89067326568860640,588671286046028640]