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A000501 as a simple table

na(n)
01
11
23
310
427
574
6201
7548
81490
94051
1011013
1129937
1281377
13221206
14601302
151634508
164443055
1712077476
1832829984
1989241150
20242582597
21659407867
221792456423
234872401723
2413244561064
2536002449668
2697864804714
27266024120300
28723128532145
291965667148572

[1,1,3,10,27,74,201,548,1490,4051,11013,29937,
 81377,221206,601302,1634508,4443055,12077476,
 32829984,89241150,242582597,659407867,1792456423,
 4872401723,13244561064,36002449668,97864804714,
 266024120300,723128532145,1965667148572]