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A274042
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Numbers n such that n - 53, n - 1, n + 1, n + 53 are consecutive primes.
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1
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9401700, 64312710, 78563130, 83494350, 92978310, 101520540, 111105090, 121631580, 136765860, 138330780, 139027950, 145673850, 157008390, 163050090, 166418280, 169288530, 170473410, 177920850, 198963210, 200765250, 213504870, 220428600
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OFFSET
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1,1
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COMMENTS
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This sequence is a subsequence of A014574 (average of twin prime pairs), A249674 (divisible by 30) and A256753.
The numbers n - 53 and n + 1 belong to A204665 (p such that p + 52 is the next prime).
The numbers n - 53 and n - 1 belong to primes p such that p + 54 is prime.
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LINKS
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EXAMPLE
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9401700 is the average of the four consecutive primes 9401647, 9401699, 9401701, 9401753.
64312710 is the average of the four consecutive primes 64312657, 64312709, 64312711, 64312763.
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MATHEMATICA
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Select[Partition[Prime[Range[122*10^5]], 4, 1], Differences[#]=={52, 2, 52}&][[All, 2]]+1 (* Harvey P. Dale, Mar 07 2018 *)
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PROG
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(Python)
from sympy import isprime, prevprime, nextprime
for i in range(0, 250000001, 6):
..if isprime(i-1) and isprime(i+1) and prevprime(i-1) == i-53 and nextprime(i+1) == i+53: print (i, end=', ')
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CROSSREFS
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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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