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A264149 as a simple table

n a(n)
0 1
1 3
2 12
3 135
4 288
5 2835
6 51840
7 8505
8 2488320
9 12629925
10 209018880
11 492567075
12 75246796800
13 1477701225
14 902961561600
15 39565450299375
16 86684309913600
17 2255230667064375
18 514904800886784000
19 6765692001193125
20 86504006548979712000
21 7002491221234884375

[1,3,12,135,288,2835,51840,8505,2488320,12629925,
 209018880,492567075,75246796800,1477701225,
 902961561600,39565450299375,86684309913600,
 2255230667064375,514904800886784000,
 6765692001193125,86504006548979712000,
 7002491221234884375]

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)