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.

A052263 Number of 5-colored labeled graphs on n nodes (divided by 1024).

Original entry on oeis.org

0, 0, 0, 0, 1, 240, 62720, 23224320, 13440516096, 12754259804160, 20377681883299840, 55671587500342640640, 262483693581093123915776, 2147534811240814766425374720, 30585643102219392981931508367360
Offset: 1

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Author

Vladeta Jovovic, Feb 03 2000

Keywords

Crossrefs

Formula

a(n, k) = (1/k)*Sum_{r=1..n-1} C(n, r) 2^(r*(n-r)) a(r, k-1).