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A373817
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Positions of terms > 1 in the run-lengths of the first differences of the odd primes.
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0
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2, 14, 34, 36, 42, 49, 66, 94, 98, 100, 107, 117, 147, 150, 169, 171, 177, 181, 199, 219, 250, 268, 315, 333, 361, 392, 398, 435, 477, 488, 520, 565, 570, 585, 592, 595, 628, 642, 660, 666, 688, 715, 744, 765, 772, 778, 829, 842, 897, 906, 931, 932, 961, 1025
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OFFSET
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1,1
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COMMENTS
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Positions of terms > 1 in A333254. In other words, the a(n)-th run of differences of odd primes has length > 1.
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LINKS
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EXAMPLE
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Primes 54 to 57 are {251, 257, 263, 269}, with differences (6,6,6). This is the 49th run, and the first of length > 2.
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MATHEMATICA
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Join@@Position[Length /@ Split[Differences[Select[Range[1000], PrimeQ]]] // Most, x_Integer?(#>1&)]
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CROSSREFS
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Positions of adjacent equal prime gaps are A064113.
Positions of adjacent unequal prime gaps are A333214.
A046933 counts composite numbers between primes.
A065855 counts composite numbers up to n.
A071148 gives partial sums of odd primes.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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