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.

A260511 Number of signed permutations of length n that are sortable to the identity permutation by some sequence of cdr (context-directed reversal) moves.

Table of values

n a(n)
1 1
2 3
3 15
4 120
5 1227
6 15188

List of values

[1, 3, 15, 120, 1227, 15188]

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

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