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A264360 as a simple table

n a(n)
1 18
2 120
3 936
4 7168
5 54720
6 418992
7 3204336
8 24514000
9 187528608
10 1434558960
11 10974201216
12 83950973056
13 642212998704
14 4912836726000
15 37582492431888
16 287500651922848
17 2199338537486832
18 16824622797993408
19 128705939150098368

[18,120,936,7168,54720,418992,3204336,24514000,
 187528608,1434558960,10974201216,83950973056,
 642212998704,4912836726000,37582492431888,
 287500651922848,2199338537486832,
 16824622797993408,128705939150098368]

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Last modified June 18 08:40 EDT 2021. Contains 345098 sequences. (Running on oeis4.)