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A251762 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 1
6 0
7 0
8 0
9 0
10 1
11 2
12 4
13 8
14 16
15 32
16 63
17 126
18 252
19 504
20 1008
21 2015
22 4028
23 8052
24 16096
25 32176
26 64320
27 128577
28 257028
29 513804
30 1027104
31 2053200
32 4104385
33 8204742
34 16401432
35 32786768
36 65541360
37 131018400
38 261908223
39 523559418
40 1046605032
41 2092182960

[0,0,0,0,0,1,0,0,0,0,1,2,4,8,16,32,63,126,252,504,
 1008,2015,4028,8052,16096,32176,64320,128577,
 257028,513804,1027104,2053200,4104385,8204742,
 16401432,32786768,65541360,131018400,261908223,
 523559418,1046605032,2092182960]

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Last modified June 5 18:11 EDT 2024. Contains 373107 sequences. (Running on oeis4.)