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A225892 as a simple table

n a(n)
1 20
2 90
3 650
4 14762
5 28730
6 83810
7 130682
8 280370
9 708122
10 924482
11 1875530
12 4881890
13 7893290
14 12120842
15 13849562
16 20155610
17 25416722
18 28403570
19 38956322
20 47465210
21 62750162
22 88538690
23 104070602
24 112561490
25 141170042
26 163060130
27 260160770
28 294517082
29 352294130

[20,90,650,14762,28730,83810,130682,280370,708122,
 924482,1875530,4881890,7893290,12120842,13849562,
 20155610,25416722,28403570,38956322,47465210,
 62750162,88538690,104070602,112561490,141170042,
 163060130,260160770,294517082,352294130]

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Last modified August 3 03:52 EDT 2021. Contains 346435 sequences. (Running on oeis4.)