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A199561 as a simple table

n a(n)
0 4
1 28
2 244
3 2188
4 19684
5 177148
6 1594324
7 14348908
8 129140164
9 1162261468
10 10460353204
11 94143178828
12 847288609444
13 7625597484988
14 68630377364884
15 617673396283948
16 5559060566555524
17 50031545098999708
18 450283905890997364

[4,28,244,2188,19684,177148,1594324,14348908,
 129140164,1162261468,10460353204,94143178828,
 847288609444,7625597484988,68630377364884,
 617673396283948,5559060566555524,
 50031545098999708,450283905890997364]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)