Integers k such that the difference between the sum of nonprime numbers and the sum of prime numbers <= k is a square.

A373945

Integers k such that the difference between the sum of nonprime numbers and the sum of prime numbers <= k is a square.

Terms

    a(0) =0a(1) =1a(2) =4a(3) =6a(4) =13a(5) =19a(6) =24a(7) =116a(8) =139a(9) =6015a(10) =39112a(11) =65605a(12) =94020a(13) =1566318a(14) =2446259a(15) =3226100a(16) =5897845a(17) =85155749a(18) =1628068810a(19) =4244431852a(20) =14977877039a(21) =21118804085a(22) =110954554736

External references