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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.

A382379 Length of the long leg in the unique primitive Pythagorean triple (x,y,z) such that (x-y+z)/2 is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers.

Table of values

n a(n)
0 4
1 0
2 12
3 24
4 84
5 220
6 612
7 1624
8 4324
9 11400
10 30012
11 78804
12 206724
13 541840
14 1419612
15 3718264
16 9737284
17 25496940
18 66759012
19 174788904
20 457622004
21 1198100200
22 3136716012
23 8212108324
24 21499706884
25 56287170720
26 147362061612
27 385799428824
28 1010036895924

List of values

[4, 0, 12, 24, 84, 220, 612, 1624, 4324, 11400, 30012, 78804, 206724, 541840, 1419612, 3718264, 9737284, 25496940, 66759012, 174788904, 457622004, 1198100200, 3136716012, 8212108324, 21499706884, 56287170720, 147362061612, 385799428824, 1010036895924]

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

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