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A264456 as a simple table

na(n)
65
7122
81960
925922
10308912
113488684
1238438284
13420224213
144604712333
1550891058160
16569534211553
176470640729869
1874755213239764
19879145839345147
2010531462769901577
21128554339635477023
221599307831822386125
2320278763016658278490
24262052769447634167173

[5,122,1960,25922,308912,3488684,38438284,
 420224213,4604712333,50891058160,569534211553,
 6470640729869,74755213239764,879145839345147,
 10531462769901577,128554339635477023,
 1599307831822386125,20278763016658278490,
 262052769447634167173]