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A163197 as a simple table

n a(n)
0 -1
1 1
2 27
3 540
4 9800
5 176176
6 3162159
7 56744793
8 1018249595
9 18271762300
10 327873509424
11 5883451505856
12 105574253853887
13 1894453118539345
14 33994581881622075
15 610008020755286076
16 10946149791725643704
17 196420688230338021808
18 3524626238354441796015
19 63246851602149831726825

[-1,1,27,540,9800,176176,3162159,56744793,
 1018249595,18271762300,327873509424,5883451505856,
 105574253853887,1894453118539345,
 33994581881622075,610008020755286076,
 10946149791725643704,196420688230338021808,
 3524626238354441796015,63246851602149831726825]

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