Mathematics is the language of patterns and relationships, and is used to describe anything that can be quantified. Number theory
is one of the largest and oldest branches of Mathematics. The main goal of Number theory is to discover interesting and
unexpected relationships. It is devoted primarily to the study of natural numbers and integers. In Number theory, Pythagorean
triangles have been a matter of interest to various mathematicians. For an extensive variety of fascinating problems one may refer
[1-5]. Apart from the polygonal numbers we have some more fascinating patterns of numbers namely Jarasandha numbers, Nasty
numbers and Dhuruva numbers. These numbers have been presented in [6-9].
In [10-11], special Pythagorean triangles connected with Polygonal numbers and Nasty numbers are obtained. Recently in [12],
special Pythagorean triangles in connection with Hardy Ramanujan number 1729 are obtained.
In this communication, we present Special Pythagorean Triangles in connection with the Jarasandha numbers. Also we present the
number of primitive and non-primitive Pythagorean triangles & some special cases are also discussed. A few interesting relations
between the numbers and some special number patterns are presented.