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A265937 as a simple table

n a(n)
0 2
1 4
2 24
3 248
4 3600
5 67296
6 1538672
7 41593920
8 1297683360
9 45891815040
10 1814072216864
11 79263667304640
12 3793393788125760
13 197339219789611200
14 11087608251010390080
15 669127189486395204544
16 43167108189991530605184
17 2964541208087967215725440
18 215934869210274766223069440
19 16627513858173093851116296960
20 1349582577808759197056647917696
21 115158206188199564942934814336896
22 10305721256666828267464573643658240

[2,4,24,248,3600,67296,1538672,41593920,
 1297683360,45891815040,1814072216864,
 79263667304640,3793393788125760,
 197339219789611200,11087608251010390080,
 669127189486395204544,43167108189991530605184,
 2964541208087967215725440,
 215934869210274766223069440,
 16627513858173093851116296960,
 1349582577808759197056647917696,
 115158206188199564942934814336896,
 10305721256666828267464573643658240]

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Last modified April 25 13:44 EDT 2024. Contains 371975 sequences. (Running on oeis4.)