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A111926 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 1
5 5
6 15
7 36
8 78
9 162
10 331
11 671
12 1353
13 2718
14 5448
15 10908
16 21829
17 43673
18 87363
19 174744
20 349506
21 699030
22 1398079
23 2796179
24 5592381
25 11184786
26 22369596
27 44739216
28 89478457
29 178956941
30 357913911
31 715827852
32 1431655734
33 2863311498

[0,0,0,0,1,5,15,36,78,162,331,671,1353,2718,5448,
 10908,21829,43673,87363,174744,349506,699030,
 1398079,2796179,5592381,11184786,22369596,
 44739216,89478457,178956941,357913911,715827852,
 1431655734,2863311498]

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Last modified February 24 17:17 EST 2020. Contains 332209 sequences. (Running on oeis4.)