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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A375996 Number of integers y > 0 such that y < (n/2+x)*sqrt(3) and y < (n/2-x)*sqrt(3).

Original entry on oeis.org

0, 1, 2, 5, 8, 13, 18, 24, 31, 38, 47, 56, 67, 78, 90, 103, 116, 131, 146, 163, 180, 199, 217, 238, 257, 280, 301, 326, 349, 375, 400, 427, 454, 483, 512, 543, 574, 606, 639, 672, 707, 742, 779, 816, 854, 893, 932, 973, 1014, 1057, 1100, 1145, 1189, 1236, 1281
Offset: 1

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Author

Jean-Marc Rebert, Sep 05 2024

Keywords

Comments

Also number of integer coordinates of points inside an equilateral triangle with side length n, where one vertex is on the y-axis (Oy) and the other two vertices are on the x-axis (Ox).

Crossrefs

Cf. A362873.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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