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A137682 as a simple table

n a(n)
1 1
2 1
3 3
4 7
5 17
6 40
7 96
8 228
9 544
10 1296
11 3089
12 7361
13 17544
14 41810
15 99643
16 237471
17 565946
18 1348773
19 3214424
20 7660679
21 18257085
22 43510652
23 103695461
24 247129108
25 588963062
26 1403628615
27 3345155947
28 7972242937
29 18999609718
30 45280252031

[1,1,3,7,17,40,96,228,544,1296,3089,7361,17544,
 41810,99643,237471,565946,1348773,3214424,7660679,
 18257085,43510652,103695461,247129108,588963062,
 1403628615,3345155947,7972242937,18999609718,
 45280252031]

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Last modified July 23 03:00 EDT 2019. Contains 325230 sequences. (Running on oeis4.)