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A275554 as a simple table

na(n)
01
11
22
33
414
565
6680
78407
8131416
92391515
1050006040
111178973851
1230958827996
13896080197025
1428346960490560
15973097534189967
1636028797169965112
171431211525754907905
1860719765554419645244
192740193428892401092979
20131072000000281600209176

[1,1,2,3,14,65,680,8407,131416,2391515,50006040,
 1178973851,30958827996,896080197025,
 28346960490560,973097534189967,36028797169965112,
 1431211525754907905,60719765554419645244,
 2740193428892401092979,131072000000281600209176]