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.

A060146 Take the first 2n integers and using each integer once and only once as either a numerator or a denominator, construct n fractions whose sum is an integer; a(n) = number of distinct solutions for n.

Table of values

n a(n)
1 1
2 1
3 7
4 21
5 190
6 1007
7 6972
8 111554
9 1040635

List of values

[1, 1, 7, 21, 190, 1007, 6972, 111554, 1040635]

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

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