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A257354 as a simple table

n a(n)
1 220
2 784
3 3108
4 12100
5 45684
6 174724
7 674856
8 2585664
9 9853288
10 37724164
11 144911780
12 555167844
13 2122710008
14 8128825600
15 31164354584
16 119371632004
17 456940637076
18 1750016785924
19 6704844968808
20 25680650841664
21 98339620401640

[220,784,3108,12100,45684,174724,674856,2585664,
 9853288,37724164,144911780,555167844,2122710008,
 8128825600,31164354584,119371632004,456940637076,
 1750016785924,6704844968808,25680650841664,
 98339620401640]

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Last modified April 18 07:55 EDT 2024. Contains 371769 sequences. (Running on oeis4.)