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A096380
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Differences between the sum of the first three primes and the fourth prime in consecutive prime quadruples.
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0
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3, 4, 10, 14, 22, 26, 30, 40, 46, 56, 66, 74, 78, 84, 98, 106, 116, 126, 132, 140, 146, 154, 168, 184, 194, 202, 206, 202, 218, 234, 256, 258, 274, 282, 294, 304, 314, 324, 338, 342, 358, 368, 382, 378, 384, 406, 432, 446, 450, 460, 462, 474, 486, 502, 518, 526
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OFFSET
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1,1
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COMMENTS
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There are occurrences where the next term is less than the current term. Conjecture: The number of occurrences where the current term exceeds the next term is infinite.
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LINKS
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FORMULA
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a(n) = prime(n) + prime(n+1) + prime(n+2) - prime(n+3).
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MATHEMATICA
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Total[Take[#, 3]]-Last[#]&/@Partition[Prime[Range[100]], 4, 1] (* Harvey P. Dale, May 14 2011 *)
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PROG
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(PARI) g(n)=for(x=1, n, print1(prime(x)+prime(x+1)+prime(x+2)-prime(x+3)", "))
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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