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A003913 as a simple table

n a(n)
1 1
2 78
3 429
4 1001
5 1430
6 3003
7 3080
8 10725
9 13650
10 30030
11 32032
12 43680
13 45045
14 48048
15 50050
16 50050
17 75075
18 75075
19 75075
20 81081
21 114400
22 138600
23 138600
24 150150
25 205920
26 289575
27 300300
28 320320
29 360855

[1,78,429,1001,1430,3003,3080,10725,13650,30030,
 32032,43680,45045,48048,50050,50050,75075,75075,
 75075,81081,114400,138600,138600,150150,205920,
 289575,300300,320320,360855]

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)