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A111256
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a(n) = If Prime[n+2]+Prime[n]+1 is prime then Prime[n+2]+Prime[n]+1 else Prime[n+1]+Prime[n]+1.
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1
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6, 11, 17, 19, 29, 31, 41, 43, 53, 67, 73, 79, 89, 97, 107, 113, 127, 129, 139, 151, 157, 163, 181, 191, 199, 205, 211, 217, 223, 241, 259, 271, 277, 289, 307, 309, 321, 337, 347, 353, 361, 373, 389, 391, 409, 411, 439, 451, 461, 463, 473, 491, 499, 509, 521
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