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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.

A046112 a(n) is smallest integral radius of circle centered at (0,0) having 8n-4 lattice points on its circumference; a(n)/2 is smallest half-integral radius circle centered at (1/2,0) having 4n-2 lattice points; a(n)/3 is smallest third-integral radius circle centered at (1/3,0) having 2n-1 lattice points.

Table of values

n a(n)
1 1
2 5
3 25
4 125
5 65
6 3125
7 15625
8 325
9 390625
10 1953125
11 1625
12 48828125
13 4225
14 1105
15 6103515625
16 30517578125
17 40625
18 21125
19 3814697265625
20 203125
21 95367431640625
22 476837158203125
23 5525
24 11920928955078125
25 274625

List of values

[1, 5, 25, 125, 65, 3125, 15625, 325, 390625, 1953125, 1625, 48828125, 4225, 1105, 6103515625, 30517578125, 40625, 21125, 3814697265625, 203125, 95367431640625, 476837158203125, 5525, 11920928955078125, 274625]

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

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