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A145576 as a simple table

n a(n)
1 2
2 0
3 37
4 139
5 541
6 2141
7 8287
8 33119
9 131519
10 525247
11 2098687
12 8391679
13 33561599
14 134242271
15 536895487
16 2147548159
17 8590061567
18 34360196863
19 137439412223
20 549756861439
21 2199026663423
22 8796097216447
23 35184380411903

[2,0,37,139,541,2141,8287,33119,131519,525247,
 2098687,8391679,33561599,134242271,536895487,
 2147548159,8590061567,34360196863,137439412223,
 549756861439,2199026663423,8796097216447,
 35184380411903]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)