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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.

A246988 Number of isomorphism classes of oriented matroids of dimension n and cardinality n+3.

Original entry on oeis.org

1, 4, 12, 25, 50, 91, 164
Offset: 1

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Author

N. J. A. Sloane, Sep 17 2014

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A diagonal of A063804.

Extensions

a(4) corrected by Andrey Zabolotskiy, Mar 26 2023

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

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