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A255714 as a simple table

n a(n)
1 4
2 17
3 75
4 342
5 1707
6 8814
7 45735
8 229317
9 1129024
10 5744720
11 30448145
12 163328140
13 866397895
14 4515528539
15 23325358076
16 121500213369
17 648072229596
18 3549923527103
19 19654222272276
20 107149613713782
21 565522043746019

[4,17,75,342,1707,8814,45735,229317,1129024,
 5744720,30448145,163328140,866397895,4515528539,
 23325358076,121500213369,648072229596,
 3549923527103,19654222272276,107149613713782,
 565522043746019]

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Last modified April 19 06:59 EDT 2019. Contains 322237 sequences. (Running on oeis4.)