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A257515 as a simple table

n a(n)
0 1
1 0
2 1
3 2
4 2
5 4
6 9
7 12
8 26
9 48
10 90
11 172
12 348
13 664
14 1349
15 2680
16 5438
17 10976
18 22510
19 45900
20 94700
21 195032
22 404442
23 838824
24 1748308
25 3646368
26 7632628
27 15994232
28 33606168
29 70699504
30 149050669
31 314625264
32 665280246
33 1408436672
34 2986069782
35 6337988876

[1,0,1,2,2,4,9,12,26,48,90,172,348,664,1349,2680,
 5438,10976,22510,45900,94700,195032,404442,838824,
 1748308,3646368,7632628,15994232,33606168,
 70699504,149050669,314625264,665280246,1408436672,
 2986069782,6337988876]

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Last modified April 27 11:10 EDT 2024. Contains 372019 sequences. (Running on oeis4.)