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A371693 as a simple table

na(n)
01
14
228
3248
42480
526688
6301648
73531424
842449088
9520858496
106497190528
1182146802944
121050370074624
1313559126110720
14176469550681344
152313050095245824
1630506619439926272
17404558181197010944
185391161355764205568
1972156618656648237056
20969557980700415827968

[1,4,28,248,2480,26688,301648,3531424,42449088,
 520858496,6497190528,82146802944,1050370074624,
 13559126110720,176469550681344,2313050095245824,
 30506619439926272,404558181197010944,
 5391161355764205568,72156618656648237056,
 969557980700415827968]