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A160506 as a simple table

n a(n)
0 1
1 5
2 20
3 65
4 190
5 502
6 1245
7 2910
8 6505
9 13965
10 29005
11 58455
12 114810
13 220240
14 413775
15 762635
16 1381550
17 2463060
18 4327445
19 7500260
20 12836645
21 21712470
22 36323930
23 60143320
24 98620425
25 160238035
26 258110955
27 412367705
28 653709340
29 1028658150
30 1607306688

[1,5,20,65,190,502,1245,2910,6505,13965,29005,
 58455,114810,220240,413775,762635,1381550,2463060,
 4327445,7500260,12836645,21712470,36323930,
 60143320,98620425,160238035,258110955,412367705,
 653709340,1028658150,1607306688]

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Last modified April 19 17:39 EDT 2024. Contains 371797 sequences. (Running on oeis4.)