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A007107 as a simple table

n a(n)
0 1
1 0
2 0
3 1
4 9
5 216
6 7570
7 357435
8 22040361
9 1721632024
10 166261966956
11 19459238879565
12 2714812050902545
13 445202898702992496
14 84798391618743138414
15 18567039007438379656471
16 4631381194792101913679985
17 1305719477625154539392776080
18 413153055417968797025496881656

[1,0,0,1,9,216,7570,357435,22040361,1721632024,
 166261966956,19459238879565,2714812050902545,
 445202898702992496,84798391618743138414,
 18567039007438379656471,4631381194792101913679985,
 1305719477625154539392776080,
 413153055417968797025496881656]

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Last modified June 7 14:59 EDT 2024. Contains 373202 sequences. (Running on oeis4.)