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A287682 as a simple table

n a(n)
1 4
2 6
3 18
4 30
5 198
6 306
7 462
8 702
9 1482
10 2550
11 3330
12 4422
13 5778
14 6102
15 6498
16 9042
17 11178
18 11778
19 14418
20 15498
21 17298
22 17442
23 19458
24 20862
25 21582
26 22878
27 23322
28 23550
29 25230
30 26622
31 26862
32 26910
33 27378
34 30210
35 34542
36 36738
37 38610
38 39006
39 39102
40 40350
41 40662

[4,6,18,30,198,306,462,702,1482,2550,3330,4422,
 5778,6102,6498,9042,11178,11778,14418,15498,17298,
 17442,19458,20862,21582,22878,23322,23550,25230,
 26622,26862,26910,27378,30210,34542,36738,38610,
 39006,39102,40350,40662]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)