Area of regular n sided polygon

Denesting radicals

Deriving Ramanujan's formulas #1

Deriving Ramanujan's formulas #2

Deriving Ramanujan's formulas #3

Deriving vandermonde's identity

Deriving Ramanujan's formulas #4

Deriving Ramanujan's Formulas #5 + Integration #7

Lagrange's 4 Square Theorem using Python

Ramanujan's Formulas #8

Deriving arithmetic progression formula

Deriving Ramanujan's Formulas #6

OEIS - Prove that sequence 49 , 4489 , 444889 ,...form perfect squares ( A109344)