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A071411
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"Sum of n first primes" minus "sum of first n nonprimes".
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2
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1, 0, -1, -2, 0, 3, 8, 13, 21, 34, 47, 64, 84, 105, 128, 156, 189, 223, 262, 303, 344, 390, 439, 493, 554, 617, 681, 748, 815, 884, 966, 1051, 1140, 1230, 1329, 1429, 1534, 1643, 1755, 1872, 1994, 2117, 2248, 2379, 2513, 2648, 2794, 2951, 3110, 3270, 3433, 3600, 3767, 3943, 4124, 4310, 4501, 4692, 4888
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OFFSET
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1,4
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LINKS
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Table of n, a(n) for n=1..59.
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FORMULA
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a(n) = A007504(n) - A051349(n). Cf. A024850.
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PROG
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(PARI) for(n=1, 100, s=2; while(sum(i=1, s, 1-isprime(i))<n, s++); print1(-sum(k=1, s, (1-is prime(k))*k)+sum(k=1, n, prime(k)), ", "))
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CROSSREFS
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Sequence in context: A020826 A094346 A074104 * A255384 A236396 A251592
Adjacent sequences: A071408 A071409 A071410 * A071412 A071413 A071414
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KEYWORD
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easy,sign
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AUTHOR
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Benoit Cloitre, Jun 23 2002
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EXTENSIONS
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Corrected and edited by Jaroslav Krizek, Jun 17 2009
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STATUS
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approved
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