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A158494 as a simple table

n a(n)
1 4
2 24
3 80
4 248
5 768
6 2360
7 7200
8 21848
9 66048
10 199160
11 599520
12 1802648
13 5416128
14 16264760
15 48827040
16 146546648
17 439771008
18 1319575160
19 3959249760
20 11878797848
21 35638490688
22 106919666360
23 320767387680
24 962318940248
25 2886990375168
26 8661038234360

[4,24,80,248,768,2360,7200,21848,66048,199160,
 599520,1802648,5416128,16264760,48827040,
 146546648,439771008,1319575160,3959249760,
 11878797848,35638490688,106919666360,320767387680,
 962318940248,2886990375168,8661038234360]

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Last modified April 19 23:15 EDT 2024. Contains 371798 sequences. (Running on oeis4.)