Number of primitive Pythagorean triangles with perimeter equal to A002110(n), the product of the first n primes.

A077177

Number of primitive Pythagorean triangles with perimeter equal to A002110(n), the product of the first n primes.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =3a(7) =5a(8) =8a(9) =17a(10) =34a(11) =59a(12) =111a(13) =213a(14) =396a(15) =746a(16) =1413a(17) =2690a(18) =5147a(19) =9826a(20) =18885a(21) =36269a(22) =69952a(23) =134949a(24) =260743a(25) =504636a(26) =978311a(27) =1899832a(28) =3692980a(29) =7190329

External references