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A361449
Number of colorings of an n X n grid up to permutation of the colors with no element having the same color as any horizontal, diagonal or antidiagonal neighbor.
1
1, 4, 1573, 235862938, 37155328943771767, 12458003910177278332403197817, 15868284521418341362691384074620547198698934, 126024243590219798408446284849897811759970155660106999854057796, 9633603531065043175094488158875624821526224424118142906010095879389674957042528276201
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..9.
CROSSREFS
Main diagonal of A208096.
Sequence in context: A030253 A278549 A229664 * A265661 A280793 A160225
Adjacent sequences: A361446 A361447 A361448 * A361450 A361451 A361452
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Mar 13 2023
STATUS
approved

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Last modified November 29 00:35 EST 2024. Contains 378208 sequences.
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