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A074030 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 2
6 3
7 5
8 8
9 13
10 24
11 45
12 85
13 160
14 297
15 550
16 1024
17 1920
18 3626
19 6885
20 13107
21 24989
22 47709
23 91225
24 174760
25 335462
26 645120
27 1242600
28 2396745
29 4628480
30 8948385
31 17318945
32 33554432
33 65074253
34 126320640
35 245424829
36 477218560
37 928645120
38 1808414181
39 3524082400

[0,0,0,1,2,3,5,8,13,24,45,85,160,297,550,1024,
 1920,3626,6885,13107,24989,47709,91225,174760,
 335462,645120,1242600,2396745,4628480,8948385,
 17318945,33554432,65074253,126320640,245424829,
 477218560,928645120,1808414181,3524082400]

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Last modified August 19 03:19 EDT 2024. Contains 375284 sequences. (Running on oeis4.)