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A145558 as a simple table

n a(n)
1 1
2 6
3 15
4 420
5 36
6 1386
7 36036
8 40040
9 6126120
10 2116296
11 255816
12 267711444
13 3346393050
14 1745944200
15 6850263420
16 14440355289360
17 1604483921040
18 3800093497200
19 2671465728531600
20 534293145706320
21 952435607563440
22 941958815880242160
23 362291852261631600

[1,6,15,420,36,1386,36036,40040,6126120,2116296,
 255816,267711444,3346393050,1745944200,6850263420,
 14440355289360,1604483921040,3800093497200,
 2671465728531600,534293145706320,952435607563440,
 941958815880242160,362291852261631600]

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Last modified September 10 21:37 EDT 2024. Contains 375795 sequences. (Running on oeis4.)