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A000475 as a simple table

n a(n)
4 1
5 0
6 15
7 70
8 630
9 5544
10 55650
11 611820
12 7342335
13 95449640
14 1336295961
15 20044438050
16 320711010620
17 5452087178160
18 98137569209940
19 1864613814984984
20 37292276299704525
21 783137802293789040
22 17229031650463366195
23 396267727960657413630

[1,0,15,70,630,5544,55650,611820,7342335,95449640,
 1336295961,20044438050,320711010620,5452087178160,
 98137569209940,1864613814984984,37292276299704525,
 783137802293789040,17229031650463366195,
 396267727960657413630]

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Last modified March 28 13:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)