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.

A215793 Number of permutations of 0..floor((7*n-1)/2) on even squares of an 7*n array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing.

Table of values

n a(n)
1 1
2 1
3 1
4 8
5 125
6 2988
7 146205
8 6812794
9 673507749
10 48337803306

List of values

[1, 1, 1, 8, 125, 2988, 146205, 6812794, 673507749, 48337803306]

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

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