a(0) = 2, a(n) is the smallest squarefree number > a(n-1) such that the sum a(n) + a(i) for all i = 1 to (n-1) is squarefree. Or, sum of any two terms is a squarefree number.

A085902

a(0) = 2, a(n) is the smallest squarefree number > a(n-1) such that the sum a(n) + a(i) for all i = 1 to (n-1) is squarefree. Or, sum of any two terms is a squarefree number.

Terms

    a(0) =2a(1) =3a(2) =11a(3) =19a(4) =55a(5) =59a(6) =83a(7) =111a(8) =127a(9) =155a(10) =163a(11) =199a(12) =203a(13) =219a(14) =263a(15) =299a(16) =307a(17) =311a(18) =371a(19) =383a(20) =399a(21) =455a(22) =515a(23) =803a(24) =883a(25) =919a(26) =983a(27) =1063a(28) =1499a(29) =1559

External references