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A027491 as a simple table

n a(n)
3 1
4 126
5 22535
6 6139575
7 2487385684
8 1446119232796
9 1166500896454844
10 1267622549125064100
11 1809397702962603426816
12 3319681647209765132077992
13 7683477487469739839805775776
14 22073571178683618465281583731376 

[1,126,22535,6139575,2487385684,1446119232796,
 1166500896454844,1267622549125064100,
 1809397702962603426816,3319681647209765132077992,
 7683477487469739839805775776,
 22073571178683618465281583731376]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)