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A068966 as a simple table

na(n)
16
266
33204
46810
537716
672006
7182430
8532236
9370614
102155134
113203694
126353634
1351712890
1442020844
1528698786
1633163770
1755637466
18125033580
19172985436
20105470250
21151375626
22178631034
23185921166
24217064574
25939603126
26376267326
271812742734
282193232470
29853918566

[6,66,3204,6810,37716,72006,182430,532236,370614,
 2155134,3203694,6353634,51712890,42020844,
 28698786,33163770,55637466,125033580,172985436,
 105470250,151375626,178631034,185921166,217064574,
 939603126,376267326,1812742734,2193232470,
 853918566]