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A264565 as a simple table

na(n)
12
28
344
4192
5888
64104
718540
885752
9389340
101787832
118158644
1237336464
13170669592
14780379920
153568245048
1616314092712
1774594729628
18341056001520
191559406670200
207129910871000
2132599645712604
22149052729608136

[2,8,44,192,888,4104,18540,85752,389340,1787832,
 8158644,37336464,170669592,780379920,3568245048,
 16314092712,74594729628,341056001520,
 1559406670200,7129910871000,32599645712604,
 149052729608136]