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A302461 as a simple table

n a(n)
1 4
2 2
3 18
4 8
5 44
6 56
7 140
8 364
9 764
10 2352
11 5612
12 16144
13 42324
14 116260
15 314408
16 853216
17 2319700
18 6290064
19 17095288
20 46394920
21 126019004
22 342168972
23 929215108
24 2523394628
25 6852508984
26 18609263140
27 50535852808
28 137239321084
29 372695225548

[4,2,18,8,44,56,140,364,764,2352,5612,16144,42324,
 116260,314408,853216,2319700,6290064,17095288,
 46394920,126019004,342168972,929215108,2523394628,
 6852508984,18609263140,50535852808,137239321084,
 372695225548]

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Last modified September 21 16:31 EDT 2021. Contains 347598 sequences. (Running on oeis4.)