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A298774 as a simple table

na(n)
18
299
3245
42359
511657
661333
7484813
82887678
918497464
10127977516
11830209200
125490680497
1336705295118
14242989778508
151615075659957
1610732935729937
1771283281214068
18473870950797066
193148048592750846
2020916953345403645

[8,99,245,2359,11657,61333,484813,2887678,
 18497464,127977516,830209200,5490680497,
 36705295118,242989778508,1615075659957,
 10732935729937,71283281214068,473870950797066,
 3148048592750846,20916953345403645]