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A218066 as a simple table

n a(n)
1 8
2 16
3 74
4 260
5 1046
6 3974
7 15578
8 60242
9 234468
10 910060
11 3536762
12 13737348
13 53371468
14 207332364
15 805465810
16 3129084596
17 12156035112
18 47224200410
19 183458638422
20 712707497212
21 2768755861210
22 10756176540402
23 41786039888224

[8,16,74,260,1046,3974,15578,60242,234468,910060,
 3536762,13737348,53371468,207332364,805465810,
 3129084596,12156035112,47224200410,183458638422,
 712707497212,2768755861210,10756176540402,
 41786039888224]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)