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A145263
1/10 of the number of 10-colorings of an n X n array symmetric under 180 degree rotation.
0
1, 9, 5337, 3155553, 123107175225, 4788563588080785
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Sequence in context:
A167064
A125541
A151581
*
A185821
A133248
A125542
Adjacent sequences:
A145260
A145261
A145262
*
A145264
A145265
A145266
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Oct 05 2008
STATUS
approved
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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)