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A124384 as a simple table

na(n)
01
12
24
310
430
5110
6494
72734
818734
9159278
101685550
1122268974
12367653934
137597868078
14196929315886
156402998805550
16261393582040110
1713416320169124910
18865576139256079406
1970227589169019724846
207172766017169503134766
21921829147482582383174702

[1,2,4,10,30,110,494,2734,18734,159278,1685550,
 22268974,367653934,7597868078,196929315886,
 6402998805550,261393582040110,13416320169124910,
 865576139256079406,70227589169019724846,
 7172766017169503134766,921829147482582383174702]