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A278339 as a simple table

n a(n)
0 1
1 1
2 0
3 0
4 1
5 0
6 1
7 0
8 1
9 23
10 9
11 41
12 248
13 277
14 1556
15 2854
16 5233
17 20701
18 145137
19 1626890
20 4118910
21 9963276
22 9260756
23 64027363
24 365237571
25 1002679107
26 21594036300
27 24465529531
28 144914973347
29 1921444799766

[1,1,0,0,1,0,1,0,1,23,9,41,248,277,1556,2854,5233,
 20701,145137,1626890,4118910,9963276,9260756,
 64027363,365237571,1002679107,21594036300,
 24465529531,144914973347,1921444799766]

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Last modified April 19 17:38 EDT 2024. Contains 371797 sequences. (Running on oeis4.)