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A375439 as a simple table

na(n)
11
21
31
42
54
69
720
848
9117
10290
11734
121880
134868
1412730
1533556
1689072
17237904
18638873
191723930
204672008
2112710904
2234703894
2395054188
24261116816
25719223064
261985934212
275496123033
2815242821108
2942357113994
30117918233704
31328833828334
32918470764376
332569238134248
347197046596440

[1,1,1,2,4,9,20,48,117,290,734,1880,4868,12730,
 33556,89072,237904,638873,1723930,4672008,
 12710904,34703894,95054188,261116816,719223064,
 1985934212,5496123033,15242821108,42357113994,
 117918233704,328833828334,918470764376,
 2569238134248,7197046596440]