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A251653 as a simple table

n a(n)
0 0
1 0
2 1
3 0
4 0
5 1
6 2
7 4
8 7
9 14
10 28
11 55
12 108
13 212
14 417
15 820
16 1612
17 3169
18 6230
19 12248
20 24079
21 47338
22 93064
23 182959
24 359688
25 707128
26 1390177
27 2733016
28 5372968
29 10562977

[0,0,1,0,0,1,2,4,7,14,28,55,108,212,417,820,1612,
 3169,6230,12248,24079,47338,93064,182959,359688,
 707128,1390177,2733016,5372968,10562977]

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)