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A058871
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Sum of next n primes (A007468) is prime for odd n or half the sum is prime for even n.
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0
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1, 3, 5, 7, 9, 13, 18, 20, 23, 25, 29, 48, 55, 98, 117, 119, 123, 130, 173, 187, 193, 198, 205, 213, 218, 223, 248, 249, 255, 259, 265, 268, 285, 292, 299, 311, 329, 346, 351, 386, 390, 393, 397, 411, 412, 448, 483, 487, 513, 515, 525, 554, 563, 574, 587, 597
(list; graph; refs; listen; history; internal format)
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