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.

A117259 Column 0 of triangle A117258.

Table of values

n a(n)
0 1
1 1
2 -2
3 32
4 -2560
5 917504
6 -1409286144
7 9070970929152
8 -241505530017742848
9 26378844025404658810880
10 -11755594669932654094842855424
11 21291459481433341027538627037495296
12 -156279993920424129009046403691280672489472

List of values

[1, 1, -2, 32, -2560, 917504, -1409286144, 9070970929152, -241505530017742848, 26378844025404658810880, -11755594669932654094842855424, 21291459481433341027538627037495296, -156279993920424129009046403691280672489472]

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

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