Similar to ランダウ・ラマヌジャンの定数

Postage stamp problem

Lagrange's four-square theorem

Fermat polygonal number theorem

Srinivasa Ramanujan

The Man Who Knew Infinity

Ramanujan–Petersson conjecture

4130 Ramanujan

Ramanujan graph

ICTP Ramanujan Prize

Ramanujan–Nagell equation

Ramanujan tau function

Rogers–Ramanujan identities