A248712 Numbers n that are the product of four distinct primes such that x^2+y^2 = n has integer solutions.

2210, 3770, 4810, 4930, 5330, 6290, 6890, 6970, 7930, 9010, 9490, 10370, 10730, 11570, 11890, 12410, 12610, 12818, 13130, 14170, 14690, 15130, 15170, 15370, 16354, 16490, 17170, 17690, 17810, 18122, 18530, 19210, 19370, 19610, 20410, 21170, 21730, 22490

Offset: 1

Author

Colin Barker, Oct 12 2014

Keywords

• nonn

Comments

Union of 2*A264498 and A264499. - Ray Chandler, Dec 09 2019

Examples

			2210 is in the sequence because 2210 = 2*5*13*17, and x^2+y^2=2210 has integer solutions (x,y) = (1,47), (19,43), (23,41) and (29,37).
32045 is in the sequence because x^2 + y^2 = 32045 = 5*13*17*29 has solutions (x,y) = (2,179), (19,178), (46,173), (67,166), (74,163), (86,157), (109,142) and (122,131).
		

Links

• Ray Chandler, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A248649, A264498, A264499.