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.

A291562 Central terms of triangle A291560: a(n) = A291560(2*n-1,n) for n>=1.

Table of values

n a(n)
1 1
2 -10
3 8694
4 -61647300
5 1734021238950
6 -136052492985945900
7 24163008287867047021500
8 -8459330090805576230333085000
9 5291501479813583484914737466943750
10 -5495231184920767021604909502973944937500
11 8949980571079076055152283884403171536694652500
12 -21844650683271846600479522545258218405196394185875000
13 76989791585920262367039920605319026539360791969735659537500

List of values

[1, -10, 8694, -61647300, 1734021238950, -136052492985945900, 24163008287867047021500, -8459330090805576230333085000, 5291501479813583484914737466943750, -5495231184920767021604909502973944937500, 8949980571079076055152283884403171536694652500, -21844650683271846600479522545258218405196394185875000, 76989791585920262367039920605319026539360791969735659537500]

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

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