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.

A259327 Ceiling of ((2^n)!)/(4^n*(n!)^2).

Table of values

n a(n)
1 1
2 1
3 18
4 141891750
5 17844701940490283892633600000
6 59757436204078657410908164193971177467471236322918735173920946651136000000000000

List of values

[1, 1, 18, 141891750, 17844701940490283892633600000, 59757436204078657410908164193971177467471236322918735173920946651136000000000000]

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

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