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.

A053512 Half the number of non-self-intersecting paths from one corner of an n X n grid to the opposite corner.

Original entry on oeis.org

1, 6, 92, 4256, 631408, 287890282, 394680026626, 1633299243490821, 20522104351316248402, 784379015232375006607050, 91206645757124024620735442618, 32264019671635009481678592579241059, 34725332380760680832137350774453679498244
Offset: 2

Views

Author

Horst H. Manninger, Jan 14 2000

Keywords

Crossrefs

Cf. A007764.

Formula

a(n) = A007764(n) / 2. - Andrew Howroyd, May 12 2017

Extensions

Corrected, additional terms from A007764 by Andrew Howroyd, May 12 2017
Offset corrected by Joerg Arndt, Dec 03 2018

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

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