cp's OEIS Frontend

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.

A383616 Semiperimeter of the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 is A000108(n) and such that its long leg and its hypotenuse are consecutive natural numbers.

Table of values

n a(n)
0 1
1 1
2 6
3 45
4 378
5 3486
6 34716
7 367653
8 4088370
9 47273226
10 564194436
11 6911528806
12 86537776276
13 1103800077100
14 14305255952760
15 187980029453205
16 2500329620300130
17 33615543018643410
18 456277454997741300
19 6246438363690689010
20 86175353769957832380
21 1197196443763413093780
22 16738118900201817535560

List of values

[1, 1, 6, 45, 378, 3486, 34716, 367653, 4088370, 47273226, 564194436, 6911528806, 86537776276, 1103800077100, 14305255952760, 187980029453205, 2500329620300130, 33615543018643410, 456277454997741300, 6246438363690689010, 86175353769957832380, 1197196443763413093780, 16738118900201817535560]

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

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