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A340817
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a(n) is the least prime of the form prime(n)*p + prime(n+1)*q + prime(n+2)*r where p,q,r are consecutive primes.
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2
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83, 127, 167, 2749, 257, 307, 1427, 431, 769, 1811, 617, 4261, 2843, 2633, 881, 1459, 2087, 5023, 6199, 1831, 3461, 1373, 1459, 8353, 1567, 1607, 1657, 8353, 8867, 4111, 4231, 11801, 20983, 3529, 4903, 34283, 5227, 5399, 7307, 13103, 18311, 2917, 2957, 6311, 15101, 5113, 3407, 3457, 19433, 3581, 23689
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OFFSET
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2,1
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LINKS
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FORMULA
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EXAMPLE
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a(3) = 5*3 + 7*5 + 11*7 = 167.
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MAPLE
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f:= proc(n) local k, t;
for k from 1 do
t:=ithprime(n)*ithprime(k) + ithprime(n+1)*ithprime(k+1) + ithprime(n+2)*ithprime(k+2);
if isprime(t) then return t fi;
od
end proc:
map(f, [$2..30]);
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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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