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.

A309327 a(n) = Product_{k=1..n-1} (4^k + 1).

Table of values

n a(n)
0 1
1 1
2 5
3 85
4 5525
5 1419925
6 1455423125
7 5962868543125
8 97701601079103125
9 6403069829921181503125
10 1678532740564688125136703125
11 1760070825503098980191468752703125
12 7382273863761775568111978346806480703125
13 123854010565759745011512941023673583762640703125

List of values

[1, 1, 5, 85, 5525, 1419925, 1455423125, 5962868543125, 97701601079103125, 6403069829921181503125, 1678532740564688125136703125, 1760070825503098980191468752703125, 7382273863761775568111978346806480703125, 123854010565759745011512941023673583762640703125]

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

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