|
%I #7 Apr 14 2016 10:05:49
%S 509020,736300,860932,1368340,2431780
%N Magic sums of 4 X 4 magic squares composed of squares of primes.
%H The Prime Puzzles and Problems Connection, <a href="http://www.primepuzzles.net/puzzles/puzz_288.htm">Puzzle 288</a>
%H <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a>
%e Examples of 4 X 4 magic squares composed of squares of primes.
%e .
%e |-----|-----|-----|-----|
%e | 29^2| 71^2|277^2|653^2|
%e |-----|-----|-----|-----|
%e |191^2|647^2|211^2| 97^2|
%e |-----|-----|-----|-----|
%e |673^2|139^2|163^2|101^2|
%e |-----|-----|-----|-----|
%e |137^2|257^2|601^2|251^2|
%e |-----|-----|-----|-----|
%e The magic constant is 509020 = a(1).
%e .
%e |-----|-----|-----|-----|
%e |179^2|107^2|383^2|739^2|
%e |-----|-----|-----|-----|
%e |353^2|691^2|331^2|157^2|
%e |-----|-----|-----|-----|
%e |761^2|283^2|263^2| 89^2|
%e |-----|-----|-----|-----|
%e | 23^2|409^2|641^2|397^2|
%e |-----|-----|-----|-----|
%e The magic constant is 736300 = a(2).
%Y Cf. A271580. Subsequence of A271582.
%K nonn,more
%O 1,1
%A _Arkadiusz Wesolowski_, Apr 10 2016
| 