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A297316 as a simple table

na(n)
11
221
3117
4497
52577
613937
772541
8375054
91951949
1010170792
1152930039
12275412159
131433386475
147460147264
1538825258091
16202060807970
171051605128451
185472968149750
1928483454530439
20148239012444720
21771493812884305

[1,21,117,497,2577,13937,72541,375054,1951949,
 10170792,52930039,275412159,1433386475,7460147264,
 38825258091,202060807970,1051605128451,
 5472968149750,28483454530439,148239012444720,
 771493812884305]