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A280065 as a simple table

n a(n)
1 2
2 4
3 15
4 52
5 170
6 603
7 2157
8 7777
9 28195
10 102429
11 372430
12 1355019
13 4930977
14 17946466
15 65320396
16 237756751
17 865411414
18 3150039989
19 11465974491
20 41735611962
21 151915810407
22 552967220870
23 2012778077066
24 7326430841669

[2,4,15,52,170,603,2157,7777,28195,102429,372430,
 1355019,4930977,17946466,65320396,237756751,
 865411414,3150039989,11465974491,41735611962,
 151915810407,552967220870,2012778077066,
 7326430841669]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)