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A090259
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Least even a(n) not representable as a sum of two of the first n primes. From Goldbach conjecture.
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0
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6, 8, 12, 16, 20, 28, 32, 40, 44, 44, 56, 64, 76, 76, 92, 92, 92, 110, 116, 116, 136, 136, 148, 164, 174, 182, 188, 188, 220, 224, 232, 242, 242, 256, 260, 272, 272, 292, 292, 292, 332, 350, 350, 368, 368, 368, 400, 400, 412, 412, 436, 442, 442, 476, 476, 476
(list; graph; refs; listen; history; internal format)
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