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A122654 Smallest prime p such that p^2 equal to the sum of 2n+1 consecutive odd primes, or 1 if such a prime does not exist. 1

%I #3 Oct 19 2017 03:15:04

%S 7,31,13,29,107,293,821,379,293,83,31,241,37,653,43,211,73,1123,311,

%T 1567,1607,929,233,4801,601,5087,307,163,709,1021,983,191,1327,241,

%U 5443,157,277,151,743,4651,32371,1493,1373,8521,683,7919,947,1279,10847,1613

%N Smallest prime p such that p^2 equal to the sum of 2n+1 consecutive odd primes, or 1 if such a prime does not exist.

%e a(1) = 7 because A122560[1] = 7 and 7^2 = 49 = 13 + 17 + 19 = p(6) + p(7) + p(8).

%Y Cf. A122560, A070934.

%K nonn

%O 1,1

%A _Alexander Adamchuk_, Sep 21 2006

%E More terms from _Don Reble_, Sep 22 2006

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Last modified April 23 10:13 EDT 2024. Contains 371905 sequences. (Running on oeis4.)