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A266435 as a simple table

n a(n)
0 1
1 111
2 0
3 1111111
4 0
5 11111111111
6 0
7 111111111111111
8 0
9 1111111111111111111
10 0
11 11111111111111111111111
12 0
13 111111111111111111111111111
14 0
15 1111111111111111111111111111111
16 0
17 11111111111111111111111111111111111
18 0
19 111111111111111111111111111111111111111

[1,111,0,1111111,0,11111111111,0,111111111111111,
 0,1111111111111111111,0,11111111111111111111111,0,
 111111111111111111111111111,0,
 1111111111111111111111111111111,0,
 11111111111111111111111111111111111,0,
 111111111111111111111111111111111111111]

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Last modified August 8 14:04 EDT 2020. Contains 336298 sequences. (Running on oeis4.)