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A260778 as a simple table

n a(n)
1 1
2 4
3 12
4 32
5 78
6 180
7 400
8 864
9 1818
10 3756
11 7644
12 15360
13 30504
14 60012
15 117108
16 226912
17 436764
18 835940
19 1591790
20 3017408
21 5695448
22 10709604
23 20068182
24 37487152
25 69816450
26 129674484
27 240246868
28 444079488
29 819036168
30 1507514552
31 2769437312
32 5078729888
33 9297786596
34 16994815856
35 31017310020
36 56530874800
37 102891837550

[1,4,12,32,78,180,400,864,1818,3756,7644,15360,
 30504,60012,117108,226912,436764,835940,1591790,
 3017408,5695448,10709604,20068182,37487152,
 69816450,129674484,240246868,444079488,819036168,
 1507514552,2769437312,5078729888,9297786596,
 16994815856,31017310020,56530874800,102891837550]

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Last modified August 2 02:01 EDT 2024. Contains 374819 sequences. (Running on oeis4.)