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A218009 as a simple table

n a(n)
0 0
1 1
2 4
3 12
4 30
5 70
6 160
7 364
8 824
9 1848
10 4096
11 8976
12 19488
13 42016
14 90112
15 192448
16 409472
17 868224
18 1835008
19 3866880
20 8126976
21 17039872
22 35651584
23 74447872
24 155187200
25 322959360
26 671088640
27 1392513024
28 2885689344
29 5972697088
30 12348030976

[0,1,4,12,30,70,160,364,824,1848,4096,8976,19488,
 42016,90112,192448,409472,868224,1835008,3866880,
 8126976,17039872,35651584,74447872,155187200,
 322959360,671088640,1392513024,2885689344,
 5972697088,12348030976]

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Last modified April 25 10:47 EDT 2024. Contains 371967 sequences. (Running on oeis4.)