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A001552 as a simple table

n a(n)
0 5
1 15
2 55
3 225
4 979
5 4425
6 20515
7 96825
8 462979
9 2235465
10 10874275
11 53201625
12 261453379
13 1289414505
14 6376750435
15 31605701625
16 156925970179
17 780248593545
18 3883804424995
19 19349527020825
20 96470431101379
21 481245667164585
22 2401809362313955
23 11991391850823225

[5,15,55,225,979,4425,20515,96825,462979,2235465,
 10874275,53201625,261453379,1289414505,6376750435,
 31605701625,156925970179,780248593545,
 3883804424995,19349527020825,96470431101379,
 481245667164585,2401809362313955,
 11991391850823225]

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Last modified July 7 22:32 EDT 2024. Contains 374148 sequences. (Running on oeis4.)