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A094455 Prime mean of 8 horizontal, vertical and main diagonal sums associated with primes in A094454. 2

%I #6 Dec 12 2013 13:20:50

%S 41,1433,1753,2503,4789,5779,6691,7321,8861,9473,9719,11927,12329,

%T 13187,13597,14767,15361,15569,16231,16411,17383,17989,18211,19391,

%U 20743,21059,21379,23189,26881,27961,28499,29129,30539,33317,34351,36691

%N Prime mean of 8 horizontal, vertical and main diagonal sums associated with primes in A094454.

%H Harvey Heinz, <a href="http://www.magic-squares.net/anti-ms.htm">pattern and program</a>

%F Arrange 9 consecutive primes in a 3 X 3 grid wherein IBC, HAD, GFE are the first, second and third rows of horizontal primes. Then sum the rows horizontally, vertically and along the two main diagonals. Total the 8 sums, divide by 8 and if the mean is integral and prime, add to the sequence.

%e a(1)=41 because 41 is the integral and prime mean of the 8 sums of 9 consecutive primes arranged in a 3 X 3 grid wherein the first prime is 3

%Y Cf. A094454.

%K easy,nonn

%O 1,1

%A _Enoch Haga_, May 05 2004

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Last modified February 26 04:47 EST 2024. Contains 370335 sequences. (Running on oeis4.)