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.

A177606 Number of permutations of 3 copies of 1..n avoiding adjacent step pattern up, down, down, down, down.

Original entry on oeis.org

1, 1, 20, 1680, 369600, 167262000, 135190246573, 177591503329934, 354324970027942152
Offset: 0

Views

Author

R. H. Hardin, May 10 2010

Keywords

Crossrefs

Cf. A014606.

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

Content is available under The OEIS End-User License Agreement.