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A165184 as a simple table

n a(n)
0 1
1 4
2 12
3 36
4 108
5 324
6 972
7 2916
8 8748
9 26238
10 78696
11 236040
12 707976
13 2123496
14 6369192
15 19103688
16 57299400
17 171863208
18 515484678
19 1546139268
20 4637473692
21 13909589316
22 41720274396
23 125135347716
24 375329632284
25 1125759710916

[1,4,12,36,108,324,972,2916,8748,26238,78696,
 236040,707976,2123496,6369192,19103688,57299400,
 171863208,515484678,1546139268,4637473692,
 13909589316,41720274396,125135347716,375329632284,
 1125759710916]

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Last modified April 18 18:49 EDT 2024. Contains 371781 sequences. (Running on oeis4.)