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A319166 as a simple table

n a(n)
1 4
2 16
3 144
4 960
5 12880
6 62208
7 1087632
8 7027200
9 85098816
10 691398400
11 10374307328
12 49985372160
13 1061265441600
14 7064952935040
15 90426613939200
16 708867057254400
17 11892871258806912
18 65078340559220736
19 1287559798913990448
20 8819554320783360000
21 111715065087913437696

[4,16,144,960,12880,62208,1087632,7027200,
 85098816,691398400,10374307328,49985372160,
 1061265441600,7064952935040,90426613939200,
 708867057254400,11892871258806912,
 65078340559220736,1287559798913990448,
 8819554320783360000,111715065087913437696]

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Last modified September 18 13:18 EDT 2024. Contains 376000 sequences. (Running on oeis4.)