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A301990 as a simple table

na(n)
11
27
3111
42661
585137
63405375
7163457055
89153584685
9585829284705
1042179706471735
113374376483279375
12296945129873855925
1328506732454140858225
142964700174914415112175
15332046419582508638982975
1639845570349687578631280125
175100233004753819781450226625

[1,7,111,2661,85137,3405375,163457055,9153584685,
 585829284705,42179706471735,3374376483279375,
 296945129873855925,28506732454140858225,
 2964700174914415112175,332046419582508638982975,
 39845570349687578631280125,
 5100233004753819781450226625]