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A005971 as a simple table

na(n)
11
228
392
4435
51766
67598
731987
8135810
9574786
102435653
1110316252
1243702500
13185123261
14784200368
153321916912
1614071880655
1759609419066
18252509590018
191069647725567
204531100578950
2119194049901126
2281307300410353

[1,28,92,435,1766,7598,31987,135810,574786,
 2435653,10316252,43702500,185123261,784200368,
 3321916912,14071880655,59609419066,252509590018,
 1069647725567,4531100578950,19194049901126,
 81307300410353]