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A346921 as a simple table

na(n)
01
10
21
33
417
5110
6874
78064
885182
91012248
1013369026
11194245590
123079135806
1352880064588
14978038495316
1519381794788160
16409702099828104
179201877089355584
18218832476773294008
195493266481129425064
20145153549897858762776
214027310838211114515600

[1,0,1,3,17,110,874,8064,85182,1012248,13369026,
 194245590,3079135806,52880064588,978038495316,
 19381794788160,409702099828104,9201877089355584,
 218832476773294008,5493266481129425064,
 145153549897858762776,4027310838211114515600]