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.

A139671 Number of n X n symmetric binary matrices with all row sums 5.

Table of values

n a(n)
5 1
6 76
7 6912
8 848932
9 133948836
10 26615510712
11 6549149852112
12 1966499966796816
13 711040444591249476
14 305907023641901084832
15 154921887640109512226304
16 91469751377953081098144816
17 62419855497729620428436222688
18 48849705066296300911892229634944

List of values

[1, 76, 6912, 848932, 133948836, 26615510712, 6549149852112, 1966499966796816, 711040444591249476, 305907023641901084832, 154921887640109512226304, 91469751377953081098144816, 62419855497729620428436222688, 48849705066296300911892229634944]

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

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