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A116881 as a simple table

na(n)
01
14
223
3150
41037
57408
654035
7399850
82990105
922540260
10170991647
111303789534
129983164453
1376711854040
14591236890667
154568611684306
1635382196437041
17274564234870732
182134337640202295
1916617270658727878

[1,4,23,150,1037,7408,54035,399850,2990105,
 22540260,170991647,1303789534,9983164453,
 76711854040,591236890667,4568611684306,
 35382196437041,274564234870732,2134337640202295,
 16617270658727878]