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A228771 as a simple table

na(n)
11
21
33
412
553
6234
71013
84306
918051
1074903
11308487
121263393
135152139
1420941298
1584897207
16343467388
171387244237
185595368133
1922543241377
2090739796783
21364954106877
221466865660103
235892463315373
2423658818086719
2594952826295865
26380947979933041
271527871081396065
286126157580638517
2924557525359295337
3098421154766829972

[1,1,3,12,53,234,1013,4306,18051,74903,308487,
 1263393,5152139,20941298,84897207,343467388,
 1387244237,5595368133,22543241377,90739796783,
 364954106877,1466865660103,5892463315373,
 23658818086719,94952826295865,380947979933041,
 1527871081396065,6126157580638517,
 24557525359295337,98421154766829972]