A022719 - OEIS

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A022719 as a simple table

n	a(n)
0	1
1	-27
2	324
3	-2277
4	10584
5	-36882
6	118395
7	-406836
8	1347273
9	-3870993
10	10536993
11	-30432051
12	86382090
13	-223153434
14	565228773
15	-1490547915
16	3825187308
17	-9277759872
18	22515299145
19	-55438134588
20	132989193954

[1,-27,324,-2277,10584,-36882,118395,-406836, 1347273,-3870993,10536993,-30432051,86382090, -223153434,565228773,-1490547915,3825187308, -9277759872,22515299145,-55438134588,132989193954]