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A247728 as a simple table

n a(n)
1 8
2 90
3 456
4 1592
5 4344
6 10098
7 20816
8 39264
9 69000
10 114650
11 181848
12 277560
13 409976
14 588882
15 825504
16 1132928
17 1525896
18 2021274
19 2637800
20 3396600
21 4320888
22 5436530
23 6771696
24 8357472
25 10227464
26 12418458
27 14969976
28 17924984
29 21329400
30 25232850

[8,90,456,1592,4344,10098,20816,39264,69000,
 114650,181848,277560,409976,588882,825504,1132928,
 1525896,2021274,2637800,3396600,4320888,5436530,
 6771696,8357472,10227464,12418458,14969976,
 17924984,21329400,25232850]

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Last modified July 1 22:23 EDT 2022. Contains 354984 sequences. (Running on oeis4.)