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A265969 as a simple table

n a(n)
1 340
2 7656
3 23920
4 74248
5 230784
6 721864
7 2263704
8 7152956
9 22522200
10 71566116
11 226074624
12 720236752
13 2280992736
14 7276115664
15 23077516368
16 73669330232
17 233938714232
18 747052012824
19 2374072906440
20 7582196847884
21 24110436293280

[340,7656,23920,74248,230784,721864,2263704,
 7152956,22522200,71566116,226074624,720236752,
 2280992736,7276115664,23077516368,73669330232,
 233938714232,747052012824,2374072906440,
 7582196847884,24110436293280]

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Last modified January 20 01:18 EST 2022. Contains 350467 sequences. (Running on oeis4.)