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A090749 as a simple table

n a(n)
5 1
6 12
7 90
8 544
9 2907
10 14364
11 67298
12 303600
13 1332045
14 5722860
15 24192090
16 100975680
17 417225900
18 1709984304
19 6962078952
20 28192122176
21 113649492522
22 456442180920
23 1827459250276
24 7297426411968
25 29075683360185
26 115631433392020
27 459124809056550
28 1820529677650320
29 7210477496434485

[1,12,90,544,2907,14364,67298,303600,1332045,
 5722860,24192090,100975680,417225900,1709984304,
 6962078952,28192122176,113649492522,456442180920,
 1827459250276,7297426411968,29075683360185,
 115631433392020,459124809056550,1820529677650320,
 7210477496434485]

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Last modified April 24 07:15 EDT 2024. Contains 371920 sequences. (Running on oeis4.)