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A068556 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 4
5 4
6 377
7 1202
8 133211
9 1082357
10 3730351411
11 6203235575
12 28719995819965
13 2124563380903465
14 122827509141846335
15 42344667805954043
16 1305035883448960477
17 36723101348641621053659
18 384279850938174722635253
19 71260765129276904394438865

[0,0,0,0,4,4,377,1202,133211,1082357,3730351411,
 6203235575,28719995819965,2124563380903465,
 122827509141846335,42344667805954043,
 1305035883448960477,36723101348641621053659,
 384279850938174722635253,
 71260765129276904394438865]

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Last modified April 24 06:39 EDT 2024. Contains 371920 sequences. (Running on oeis4.)