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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.

A381721 Sum of the legs of the unique primitive Pythagorean triple whose inradius is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers.

Table of values

n a(n)
0 17
1 7
2 31
3 49
4 127
5 287
6 721
7 1799
8 4607
9 11857
10 30751
11 79999
12 208657
13 544967
14 1424671
15 3726449
16 9750527
17 25518367
18 66793681
19 174844999
20 457712767
21 1198247057
22 3136953631
23 8212492799
24 21500328977
25 56288177287
26 147363690271
27 385802064049
28 1010041159807
29 2644319243807
30 6922913058001
31 18124414244999
32 47450320478207

List of values

[17, 7, 31, 49, 127, 287, 721, 1799, 4607, 11857, 30751, 79999, 208657, 544967, 1424671, 3726449, 9750527, 25518367, 66793681, 174844999, 457712767, 1198247057, 3136953631, 8212492799, 21500328977, 56288177287, 147363690271, 385802064049, 1010041159807, 2644319243807, 6922913058001, 18124414244999, 47450320478207]

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

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