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A158890 Numbers k such that j*k^2+k+41 are primes for j=1,3,5,7,9,11,13 (seven primes in AP). 0

%I #4 Mar 08 2022 20:38:59

%S 67935525,135460080,1098298110,1191370110

%N Numbers k such that j*k^2+k+41 are primes for j=1,3,5,7,9,11,13 (seven primes in AP).

%C All terms are multiples of 105:

%C 105*(647005,1290096,10459982,11346382).

%K nonn

%O 1,1

%A _Zak Seidov_, Mar 29 2009

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)