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A203456 as a simple table

na(n)
11
222
3543
48837
5143936
62527020
744974778
8799146435
914222292590
10253497958735
114520112095307
1280604855648245
131437506215952323
1425637856292628890
15457259186435170066
168155419408921364692

[1,22,543,8837,143936,2527020,44974778,799146435,
 14222292590,253497958735,4520112095307,
 80604855648245,1437506215952323,25637856292628890,
 457259186435170066,8155419408921364692]