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A000526 as a simple table

na(n)
5125
61296
78716
847787
9232154
101040014
114395772
1217781210
1369498964
14264248924
15982218072
163582421612
1712857819052
1845515994861
19159205157535
20551049504784
211889714853263
226427147635062
2321698583468717

[125,1296,8716,47787,232154,1040014,4395772,
 17781210,69498964,264248924,982218072,3582421612,
 12857819052,45515994861,159205157535,551049504784,
 1889714853263,6427147635062,21698583468717]