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A141380 as a simple table

na(n)
11
21
32
48
532
6138
7624
82922
914036
1068788
11342584
121728812
138820864
1445428616
15235846688
161232970010
176485204532
1834295308230
19182233431688
20972493015258
215209848971700
2228008206873944
23151053157070944
24817032258098112

[1,1,2,8,32,138,624,2922,14036,68788,342584,
 1728812,8820864,45428616,235846688,1232970010,
 6485204532,34295308230,182233431688,972493015258,
 5209848971700,28008206873944,151053157070944,
 817032258098112]