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A131788 as a simple table

na(n)
11
22
33
46
518
622
774
8173
9350
10627
111903
123980
1311139
1429437
1572720
16108312
17337079
18379735
19988163
201354929
214458118
2212200929
2332148649
2478234718
25208109020
26546549127
271108402372
283055896646
298105184898
308151267237
3129457007624

[1,2,3,6,18,22,74,173,350,627,1903,3980,11139,
 29437,72720,108312,337079,379735,988163,1354929,
 4458118,12200929,32148649,78234718,208109020,
 546549127,1108402372,3055896646,8105184898,
 8151267237,29457007624]