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A289643 as a simple table

n a(n)
0 0
1 3
2 20
3 70
4 180
5 385
6 728
7 1260
8 2040
9 3135
10 4620
11 6578
12 9100
13 12285
14 16240
15 21080
16 26928
17 33915
18 42180
19 51870
20 63140
21 76153
22 91080
23 108100
24 127400
25 149175
26 173628
27 200970
28 231420
29 265205
30 302560
31 343728
32 388960
33 438515
34 492660
35 551670
36 615828
37 685425
38 760760
39 842140

[0,3,20,70,180,385,728,1260,2040,3135,4620,6578,
 9100,12285,16240,21080,26928,33915,42180,51870,
 63140,76153,91080,108100,127400,149175,173628,
 200970,231420,265205,302560,343728,388960,438515,
 492660,551670,615828,685425,760760,842140]

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Last modified May 6 07:22 EDT 2024. Contains 372290 sequences. (Running on oeis4.)