cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A348130 Number of ways to place n nonattacking queens on a 2n X 2n board.

Original entry on oeis.org

1, 4, 44, 1024, 34568, 1535440, 84871680, 5613017128, 432539436508, 38053315307904, 3763518275715424
Offset: 0

Views

Author

Alois P. Heinz, Oct 01 2021

Keywords

Examples

			a(1) = 4:
  +-----+  +-----+  +-----+  +-----+
  | Q . |  | . . |  | . Q |  | . . |
  | . . |  | Q . |  | . . |  | . Q |
  +-----+  +-----+  +-----+  +-----+  .

Crossrefs

Cf. A348129.

Formula

a(n) = A348129(2n,n).

Extensions

a(9)-a(10) from Martin Ehrenstein, Oct 06 2021
Previous Showing 11-11 of 11 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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