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.

A139675 Number of n X n symmetric binary matrices with all row sums 8.

Table of values

n a(n)
8 1
9 2620
10 8372754
11 30649435140
12 133475706272700
13 711040444591249476
14 4686484162304929219950
15 38295413179145036856212700
16 386860001875783390762182911250
17 4805622573099374975572752075805000
18 72929153106385401417284439399165879652

List of values

[1, 2620, 8372754, 30649435140, 133475706272700, 711040444591249476, 4686484162304929219950, 38295413179145036856212700, 386860001875783390762182911250, 4805622573099374975572752075805000, 72929153106385401417284439399165879652]

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

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