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A289780 as a simple table

n a(n)
0 1
1 4
2 14
3 47
4 156
5 517
6 1714
7 5684
8 18851
9 62520
10 207349
11 687676
12 2280686
13 7563923
14 25085844
15 83197513
16 275925586
17 915110636
18 3034975799
19 10065534960
20 33382471801
21 110713382644
22 367182309614
23 1217764693607
24 4038731742156
25 13394504020957
26 44423039068114

[1,4,14,47,156,517,1714,5684,18851,62520,207349,
 687676,2280686,7563923,25085844,83197513,
 275925586,915110636,3034975799,10065534960,
 33382471801,110713382644,367182309614,
 1217764693607,4038731742156,13394504020957,
 44423039068114]

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)