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.

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A107445 Number of 4n X 4n alternating-sign matrices of type UU.

Original entry on oeis.org

1, 5, 198, 63206, 163170556, 3410501048325, 577465332522075000, 792313244775191409073200, 8810729389390415079342840510816
Offset: 0

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Author

Paul Zinn-Justin, May 16 2007, Jun 04 2007

Keywords

Links

Crossrefs

Cf. A005156, A059488, A059493.

Formula

a(n) = A005156(n)*A059489(n).
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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