A390984 Number of n X n grids with 7 non-attacking kings on each row.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3432, 4347856956317310, 18363689763179745510999232280186, 213022257690692114331338241853678705308069870, 6169385897484953444874656921598915591988603068545019128170

Offset

0,28

Links

Sean A. Irvine, Table of n, a(n) for n = 0..35

Hamidreza Maleki Tirabadi, Example of a(27)

Formula

See A390419.

Example

For example of a(27) see link.

Crossrefs

Column k=7 of A390419.

Cf. A387098.

Sequence in context: A172832 A172881 A172913 * A172708 A244170 A245792

Adjacent sequences: A390981 A390982 A390983 * A390985 A390986 A390987

Keyword

nonn

Author

Hamidreza Maleki Tirabadi, Nov 25 2025

Status

approved