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A056069 as a simple table

n a(n)
4 25
5 454
6 3818
7 21420
8 92805
9 335152
10 1055944
11 2990020
12 7767357
13 18789070
14 42797602
15 92588216
16 191542842
17 381000192
18 731941256
19 1363109096
20 2468549141
21 4358716470
22 7520830306
23 12706161124
24 21054530855
25 34269633840
26 54863015040
27 86489873580
28 134406530985

[25,454,3818,21420,92805,335152,1055944,2990020,
 7767357,18789070,42797602,92588216,191542842,
 381000192,731941256,1363109096,2468549141,
 4358716470,7520830306,12706161124,21054530855,
 34269633840,54863015040,86489873580,134406530985]

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Last modified May 26 05:25 EDT 2019. Contains 323579 sequences. (Running on oeis4.)