A360280 Squares that are the hypotenuse of a primitive Pythagorean triangle.

25, 169, 289, 625, 841, 1369, 1681, 2809, 3721, 4225, 5329, 7225, 7921, 9409, 10201, 11881, 12769, 15625, 18769, 21025, 22201, 24649, 28561, 29929, 32761, 34225, 37249, 38809, 42025, 48841, 52441, 54289, 58081, 66049, 70225, 72361, 76729, 78961, 83521, 85849, 93025, 97969

Offset: 1

Author

Alexandru Petrescu, Feb 01 2023

Keywords

• nonn

Comments

All terms are congruent to 1 (mod 8).

Examples

			169 is a term because 169 = 13^2 and (119,120,169) is a primitive Pythagorean triangle.
		

Crossrefs

Cf. A000290, A008846, A020882, A198436.

Formula

a(n) = A008846(n)^2.