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, 4, 1573, 235862938, 37155328943771767, 12458003910177278332403197817, 15868284521418341362691384074620547198698934, 126024243590219798408446284849897811759970155660106999854057796, 9633603531065043175094488158875624821526224424118142906010095879389674957042528276201

Offset: 1

Author

Andrew Howroyd, Mar 13 2023

Keywords

• nonn

Crossrefs

Main diagonal of A208096.