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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.

A356204 a(n) is the second component y of the distance vector (x,y) in an oblique 120-degree coordinate system, 0 <= y <= x, between two nodes of an infinite triangular lattice of one-ohm resistors, such that the resistance R between the two nodes is as close as possible to n ohms, i.e., abs(R - n) is minimized. x is A356203(n).

Table of values

n a(n)
0 0
1 18
2 2536
3 1136101
4 119227930
5 33636581266
6 1774960492720
7 685318499093455

List of values

[0, 18, 2536, 1136101, 119227930, 33636581266, 1774960492720, 685318499093455]

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

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