Какие есть тройки Пифагоровых чисел?

примерно так
(3, 4, 5), (6, 8, 10), (5, 12, 13), (9, 12, 15), (8, 15, 17), (12, 16, 20), (15, 20, 25), (7, 24, 25), (10, 24, 26), (20, 21, 29), (18, 24, 30), (16, 30, 34), (21, 28, 35), (12, 35, 37), (15, 36, 39), (24, 32, 40), (9, 40, 41), (14, 48, 50), (30, 40, 50)…

Разные

(m² + n²)² = (m² - n²)² + (2mn)²; m, n ∈ ℕ.

9,12,15 например

(3, 4, 5), (6, 8, 10), (5, 12, 13), (9, 12, 15), (8, 15, 17), (12, 16, 20), (15, 20, 25), (7, 24, 25), (10, 24, 26), (20, 21, 29), (18, 24, 30), (16, 30, 34), (21, 28, 35), (12, 35, 37), (15, 36, 39), (24, 32, 40), (9, 40, 41), (14, 48, 50), (30, 40, 50)…

А есть 5,6 и ещё какое-то число ?

(20, 99, 101)(60, 91, 109)(15, 112, 113)(44, 117, 125)
(88, 105, 137)(17, 144, 145)(24, 143, 145)(51, 140, 149)
(85, 132, 157)(119, 120, 169)(52, 165, 173)(19, 180, 181)
(57, 176, 185)(104, 153, 185)(95, 168, 193)(28, 195, 197)
(84, 187, 205)(133, 156, 205)(21, 220, 221)(140, 171, 221)
(60, 221, 229)(105, 208, 233)(120, 209, 241)(32, 255, 257)
(23, 264, 265)(96, 247, 265)(69, 260, 269)(115, 252, 277)
(160, 231, 281)(161, 240, 289)(68, 285, 293)

(3, 4, 5), (6, 8, 10), (5, 12, 13), (9, 12, 15), (8, 15, 17), (12, 16, 20), (15, 20, 25), (7, 24, 25), (10, 24, 26), (20, 21, 29), (18, 24, 30), (16, 30, 34), (21, 28, 35), (12, 35, 37), (15, 36, 39), (24, 32, 40), (9, 40, 41), (14, 48, 50), (30, 40, 50)…

примерно так
(3, 4, 5), (6, 8, 10), (5, 12, 13), (9, 12, 15), (8, 15, 17), (12, 16, 20), (15, 20, 25), (7, 24, 25), (10, 24, 26), (20, 21, 29), (18, 24, 30), (16, 30, 34), (21, 28, 35), (12, 35, 37), (15, 36, 39), (24, 32, 40), (9, 40, 41), (14, 48, 50), (30, 40, 50)…