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A009992 as a simple table

n a(n)
0 1
1 48
2 2304
3 110592
4 5308416
5 254803968
6 12230590464
7 587068342272
8 28179280429056
9 1352605460594688
10 64925062108545024
11 3116402981210161152
12 149587343098087735296
13 7180192468708211294208
14 344649238497994142121984
15 16543163447903718821855232 

[1,48,2304,110592,5308416,254803968,12230590464,
 587068342272,28179280429056,1352605460594688,
 64925062108545024,3116402981210161152,
 149587343098087735296,7180192468708211294208,
 344649238497994142121984,
 16543163447903718821855232]

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Last modified May 11 00:12 EDT 2024. Contains 372388 sequences. (Running on oeis4.)