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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.

A322095 Number of permutations of 7 copies of 1..n with no element equal to another within a distance of 1.

Table of values

n a(n)
0 1
1 0
2 2
3 339720
4 549023310936
5 4383995385521886720
6 131828993822765959468851600
7 12202002913678756821228939869239920
8 2988325485815656468293009880545684170044800
9 1723427149081248135793318785599849462668815779427840

List of values

[1, 0, 2, 339720, 549023310936, 4383995385521886720, 131828993822765959468851600, 12202002913678756821228939869239920, 2988325485815656468293009880545684170044800, 1723427149081248135793318785599849462668815779427840]

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

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