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A282856 as a simple table

n a(n)
1 4
2 11
3 31
4 89
5 251
6 715
7 2028
8 5761
9 16358
10 46452
11 131910
12 374581
13 1063696
14 3020560
15 8577449
16 24357268
17 69167021
18 196412696
19 557750593
20 1583837157
21 4497601906
22 12771782030
23 36267864414
24 102989386002
25 292457628811
26 830488149997

[4,11,31,89,251,715,2028,5761,16358,46452,131910,
 374581,1063696,3020560,8577449,24357268,69167021,
 196412696,557750593,1583837157,4497601906,
 12771782030,36267864414,102989386002,292457628811,
 830488149997]

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Last modified August 20 04:46 EDT 2019. Contains 326139 sequences. (Running on oeis4.)