Table read by antidiagonals of least integer "mod 4 prime signatures" k ordered by number of primitive Pythagorean triples with hypotenuse = k.

A097754

Table read by antidiagonals of least integer "mod 4 prime signatures" k ordered by number of primitive Pythagorean triples with hypotenuse = k.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =3a(4) =25a(5) =65a(6) =4a(7) =125a(8) =325a(9) =1105a(10) =6a(11) =625a(12) =1625a(13) =5525a(14) =32045a(15) =8a(16) =3125a(17) =4225a(18) =27625a(19) =160225a(20) =1185665a(21) =9a(22) =15625a(23) =8125a(24) =71825a(25) =801125a(26) =5928325a(27) =48612265a(28) =10a(29) =78125

External references