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.

A190927 Number of permutations of n copies of 1..7 introduced in order 1..7 with no element equal to another within a distance of 1.

Table of values

n a(n)
1 1
2 47844
3 4420321081
4 551248360550999
5 81644850343968535401
6 13519747358522016160671387
7 2421032324142610480402567434373
8 459408385876250801291447710561829082
9 91155245844064069307740171414201519055298

List of values

[1, 47844, 4420321081, 551248360550999, 81644850343968535401, 13519747358522016160671387, 2421032324142610480402567434373, 459408385876250801291447710561829082, 91155245844064069307740171414201519055298]

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

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