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A222680 as a simple table

na(n)
12
21
35
410
525
6150
7359
82249
96511
1039991
11119033
12747758
132254819
1414115927
1543486517
16268330409
17844434635
185129191736
1916468845241
2098454511005
21322307191185
221896450581728
236325288982445
2436644084370361
25124416281370753

[2,1,5,10,25,150,359,2249,6511,39991,119033,
 747758,2254819,14115927,43486517,268330409,
 844434635,5129191736,16468845241,98454511005,
 322307191185,1896450581728,6325288982445,
 36644084370361,124416281370753]