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A304694 as a simple table

na(n)
13
2120
3669
44910
537050
6263381
71894297
813791026
999838011
10723141636
115242242192
1238000913259
13275443591763
141996621786317
1514473789984416
16104921152690890
17760577267171391
185513516936878546
1939968166811319574

[3,120,669,4910,37050,263381,1894297,13791026,
 99838011,723141636,5242242192,38000913259,
 275443591763,1996621786317,14473789984416,
 104921152690890,760577267171391,5513516936878546,
 39968166811319574]