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.

A378609 Number of weak orderings of (i,j), 1 <= i,j <= n, for which there is a set X = {x_1<... of n real numbers with (i,j) < (k,m) if and only if x_i + x_j < x_k + x_m.

Table of values

n a(n)
1 1
2 1
3 3
4 25
5 477
6 18403

List of values

[1, 1, 3, 25, 477, 18403]

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

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