A085902 a(1)=2, a(n) = 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.

2, 3, 11, 19, 55, 59, 83, 111, 127, 155, 163, 199, 203, 219, 263, 299, 307, 311, 371, 383, 399, 455, 515, 803, 883, 919, 983, 1063, 1499, 1559, 1927, 2019, 2063, 2183, 2215, 2271, 2359, 2503, 2703, 2755, 2999, 3459, 3899, 3927, 4271, 4303, 4411, 4519, 4559