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A090580 as a simple table

n a(n)
1 1
2 5
3 15
4 35
5 70
6 126
7 210
8 330
9 495
10 714
11 992
12 1330
13 1725
14 2170
15 2654
16 3162
17 3675
18 4170
19 4620
20 4998
21 5283
22 5460
23 5520
24 5460
25 5283
26 4998
27 4620
28 4170
29 3675
30 3162
31 2654
32 2170
33 1725
34 1330
35 992
36 714
37 495
38 330
39 210
40 126
41 70
42 35
43 15
44 5
45 1

[1,5,15,35,70,126,210,330,495,714,992,1330,1725,
 2170,2654,3162,3675,4170,4620,4998,5283,5460,5520,
 5460,5283,4998,4620,4170,3675,3162,2654,2170,1725,
 1330,992,714,495,330,210,126,70,35,15,5,1]

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Last modified April 16 12:05 EDT 2024. Contains 371711 sequences. (Running on oeis4.)