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A271712 a(n) = smallest magic sum of any 4 X 4 magic square composed of n-gonal numbers. 2

%I #10 Apr 14 2016 10:06:07

%S 1402,2823,2591234,4347245,95803378,4818162,160959761,156127479

%N a(n) = smallest magic sum of any 4 X 4 magic square composed of n-gonal numbers.

%H Christian Boyer, <a href="http://www.multimagie.com/English/SmallestTriangular.htm">Smallest magic squares of triangular numbers</a>

%H <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a>

%F a(n) = Sum_{k=1..4} A271711(n,k).

%Y Cf. A271579, A271580, A271711.

%K nonn,more

%O 3,1

%A _Arkadiusz Wesolowski_, Apr 12 2016

%E a(6)-a(10) were found in 2013 and 2014 by Lee Morgenstern

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Last modified April 14 09:06 EDT 2024. Contains 371657 sequences. (Running on oeis4.)