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A172025 as a simple table

n a(n)
0 1
1 4
2 16
3 62
4 239
5 920
6 3544
7 13672
8 52834
9 204528
10 793092
11 3080226
12 11980667
13 46662704
14 181971248
15 710454896
16 2776717742
17 10863073784
18 42537035408
19 166704021596
20 653827252022
21 2566222449104
22 10079023179536
23 39611016586832

[1,4,16,62,239,920,3544,13672,52834,204528,793092,
 3080226,11980667,46662704,181971248,710454896,
 2776717742,10863073784,42537035408,166704021596,
 653827252022,2566222449104,10079023179536,
 39611016586832]

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)