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A117927 as a simple table

n a(n)
1 4
2 15
3 84
4 210
5 2002
6 5005
7 116280
8 319770
9 2042975
10 5311735
11 193536720
12 548354040
13 1476337800
14 9669554100
15 25140840660
16 991493848554
17 6499270398159
18 27900908274925
19 280576272201225
20 1210269541711230
21 3342649210440540
22 34315056105966195
23 227068876035237600
24 2305629203680278840

[4,15,84,210,2002,5005,116280,319770,2042975,
 5311735,193536720,548354040,1476337800,9669554100,
 25140840660,991493848554,6499270398159,
 27900908274925,280576272201225,1210269541711230,
 3342649210440540,34315056105966195,
 227068876035237600,2305629203680278840]

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Last modified September 16 07:48 EDT 2024. Contains 375959 sequences. (Running on oeis4.)