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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.

A331042 a(n) = 4 * squared radius of inscribed circles of triangles with integer sides i <= j <= k, such that the number of triangles with this radius sets a new record. If this radius is not a multiple of (1/4), a(n) = 0.

Table of values

n a(n)
1 0
2 0
3 3
4 7
5 12
6 15
7 32
8 35
9 55
10 63
11 95
12 119
13 135
14 224
15 231
16 255
17 320
18 351
19 455
20 495
21 855
22 864
23 896
24 1071
25 1440

List of values

[0, 0, 3, 7, 12, 15, 32, 35, 55, 63, 95, 119, 135, 224, 231, 255, 320, 351, 455, 495, 855, 864, 896, 1071, 1440]

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

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