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A206764 as a simple table

n a(n)
1 1
2 -1
3 10
4 79
5 1026
6 15686
7 279938
8 5771359
9 134218243
10 3487832974
11 100000000002
12 3138673052878
13 106993205379074
14 3937454749863382
15 155568096631586820
16 6568441588686506943
17 295147905179352825858
18 14063102470280932000757
19 708235345355337676357634

[1,-1,10,79,1026,15686,279938,5771359,134218243,
 3487832974,100000000002,3138673052878,
 106993205379074,3937454749863382,
 155568096631586820,6568441588686506943,
 295147905179352825858,14063102470280932000757,
 708235345355337676357634]

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Last modified December 13 03:41 EST 2019. Contains 329968 sequences. (Running on oeis4.)