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A178532
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Partial sums of problimes (third definition, A003068).
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1
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2, 6, 13, 24, 39, 58, 81, 109, 142, 180, 223, 271, 324, 382, 445, 513, 586, 665, 750, 841, 938, 1041, 1150, 1265, 1386, 1513, 1646, 1785, 1930, 2081, 2238, 2401, 2570, 2745, 2926, 3113, 3306, 3505, 3710, 3921, 4138, 4362, 4593, 4831, 5076
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OFFSET
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1,1
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COMMENTS
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The subsequence of prime partial sums of problimes begins: 2, 13, 109, 223, 271, 2081, 4831, 8233.
The subsequence of problime partial sums of problimes begins: 2, 58, 109.
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LINKS
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Table of n, a(n) for n=1..45.
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FORMULA
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SUM[i=1..n] A003068(i).
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EXAMPLE
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a(12) = 2 + 4 + 7 + 11 + 15 + 19 + 23 + 28 + 33 + 38 + 43 + 48 = 271 is prime.
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CROSSREFS
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Cf. A003068, A007504, A013918.
Sequence in context: A180773 A011891 A184533 * A003600 A000135 A065220
Adjacent sequences: A178529 A178530 A178531 * A178533 A178534 A178535
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KEYWORD
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nonn,easy
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AUTHOR
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Jonathan Vos Post, Dec 28 2010
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STATUS
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approved
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