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A052921 as a simple table

na(n)
01
12
24
39
421
549
6114
7265
8616
91432
103329
117739
1217991
1341824
1497229
15226030
16525456
171221537
182839729
196601569
2015346786
2135676949
2282938844
23192809420
24448227521
251042002567
262422362079
275631308624
2813091204281
2930433357674
3070748973084
31164471408185

[1,2,4,9,21,49,114,265,616,1432,3329,7739,17991,
 41824,97229,226030,525456,1221537,2839729,6601569,
 15346786,35676949,82938844,192809420,448227521,
 1042002567,2422362079,5631308624,13091204281,
 30433357674,70748973084,164471408185]