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A084575 as a simple table

na(n)
11
22
34
410
526
668
7246
8810
92704
107492
1132066
1286500
13400024
141366500
154614524
1618784170
1768635478

[1,2,4,10,26,68,246,810,2704,7492,32066,86500,
 400024,1366500,4614524,18784170,68635478]