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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.

A380823 Semiperimeter 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 15
1 6
2 28
3 45
4 120
5 276
6 703
7 1770
8 4560
9 11781
10 30628
11 79800
12 208335
13 544446
14 1423828
15 3725085
16 9748320
17 25514796
18 66787903
19 174835650
20 457697640
21 1198222581
22 3136914028
23 8212428720
24 21500225295
25 56288009526
26 147363418828
27 385801624845
28 1010040449160
29 2644318093956
30 6922911197503

List of values

[15, 6, 28, 45, 120, 276, 703, 1770, 4560, 11781, 30628, 79800, 208335, 544446, 1423828, 3725085, 9748320, 25514796, 66787903, 174835650, 457697640, 1198222581, 3136914028, 8212428720, 21500225295, 56288009526, 147363418828, 385801624845, 1010040449160, 2644318093956, 6922911197503]

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

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