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A014348 as a simple table

n a(n)
0 4
1 18
2 84
3 393
4 1830
5 8433
6 38376
7 171957
8 757362
9 3271533
10 13849980
11 57396693
12 233039058
13 927277245
14 3624209748
15 13934877933
16 52843565490
17 197989340133
18 734212702164
19 2698456656933
20 9837838481154
21 35609804891973
22 128026118332596
23 457386991178451

[4,18,84,393,1830,8433,38376,171957,757362,
 3271533,13849980,57396693,233039058,927277245,
 3624209748,13934877933,52843565490,197989340133,
 734212702164,2698456656933,9837838481154,
 35609804891973,128026118332596,457386991178451]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)