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A251707 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 0
5 0
6 1
7 2
8 4
9 8
10 15
11 30
12 60
13 119
14 236
15 468
16 928
17 1841
18 3652
19 7244
20 14369
21 28502
22 56536
23 112144
24 222447
25 441242
26 875240
27 1736111
28 3443720
29 6830904
30 13549664
31 26876881
32 53312520
33 105749800
34 209763489
35 416083258
36 825335612
37 1637121560
38 3247366239

[0,0,0,1,0,0,1,2,4,8,15,30,60,119,236,468,928,
 1841,3652,7244,14369,28502,56536,112144,222447,
 441242,875240,1736111,3443720,6830904,13549664,
 26876881,53312520,105749800,209763489,416083258,
 825335612,1637121560,3247366239]

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Last modified March 28 14:02 EDT 2024. Contains 371254 sequences. (Running on oeis4.)