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A222610 as a simple table

na(n)
11
21
33
412
540
6149
7615
82659
911641
1051672
11231598
121044550
134729221
1421473854
1597727797
16445587611
172034814173
189304775285
1942600153350
20195249156987
21895771869115
224113392176083
2318904548916567
2486949854091897

[1,1,3,12,40,149,615,2659,11641,51672,231598,
 1044550,4729221,21473854,97727797,445587611,
 2034814173,9304775285,42600153350,195249156987,
 895771869115,4113392176083,18904548916567,
 86949854091897]