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A079472 as a simple table

n a(n)
1 0
2 2
3 4
4 12
5 30
6 80
7 208
8 546
9 1428
10 3740
11 9790
12 25632
13 67104
14 175682
15 459940
16 1204140
17 3152478
18 8253296
19 21607408
20 56568930
21 148099380
22 387729212
23 1015088254
24 2657535552
25 6957518400
26 18215019650
27 47687540548
28 124847601996
29 326855265438
30 855718194320

[0,2,4,12,30,80,208,546,1428,3740,9790,25632,
 67104,175682,459940,1204140,3152478,8253296,
 21607408,56568930,148099380,387729212,1015088254,
 2657535552,6957518400,18215019650,47687540548,
 124847601996,326855265438,855718194320]

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Last modified February 19 19:06 EST 2020. Contains 332047 sequences. (Running on oeis4.)