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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.

A383958 Sum of the legs of the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 = A000108(n) and its long leg and hypotenuse are consecutive natural numbers.

Table of values

n a(n)
0 1
1 1
2 7
3 49
4 391
5 3527
6 34847
7 368081
8 4089799
9 47278087
10 564211231
11 6911587591
12 86537984287
13 1103800819999
14 14305258627199
15 187980039148049
16 2500329655657799
17 33615543148288199
18 456277455475379999
19 6246438365457952199
20 86175353776521952799
21 1197196443787879360799
22 16738118900293300099199

List of values

[1, 1, 7, 49, 391, 3527, 34847, 368081, 4089799, 47278087, 564211231, 6911587591, 86537984287, 1103800819999, 14305258627199, 187980039148049, 2500329655657799, 33615543148288199, 456277455475379999, 6246438365457952199, 86175353776521952799, 1197196443787879360799, 16738118900293300099199]

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

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