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A259808 as a simple table

n a(n)
1 4
2 14
3 56
4 226
5 958
6 4052
7 17508
8 75634
9 330804
10 1448830
11 6397288
12 28293338
13 125845174
14 560617586
15 2507890716
16 11234741560
17 50489990570
18 227190742034
19 1024878998006
20 4628430595232

[4,14,56,226,958,4052,17508,75634,330804,1448830,
 6397288,28293338,125845174,560617586,2507890716,
 11234741560,50489990570,227190742034,
 1024878998006,4628430595232]

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Last modified March 19 02:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)