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A074026 as a simple table

na(n)
11
22
38
430
5124
6516
72232
89750
943400
10195248
11887784
124068740
1318780048
1487191964

[1,2,8,30,124,516,2232,9750,43400,195248,887784,
 4068740,18780048,87191964]