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A243281
Number of inequivalent (mod D_8) ways to place n nonattacking knights on an n X n board.
1
1, 2, 9, 66, 1244, 32524, 1114549, 47513547, 2401002993, 140026612346
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OFFSET
1,2
LINKS
Table of n, a(n) for n = 1..10
CROSSREFS
Cf.
A201540
,
A243716
.
Sequence in context:
A118804
A365995
A020555
*
A091795
A319286
A158952
Adjacent sequences:
A243278
A243279
A243280
*
A243282
A243283
A243284
KEYWORD
nonn
,
hard
AUTHOR
Heinrich Ludwig
, Jun 19 2014
STATUS
approved
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Last modified August 16 12:46 EDT 2024. Contains 375174 sequences. (Running on oeis4.)