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A271579 Magic sums of 4 X 4 magic squares composed of triangular numbers.

%I A271579 #7 Apr 14 2016 10:05:23
%S A271579 1402,1912,2162,2164,2422,2612,3362,3512,3737,3952,4207,4257,4322,
%T A271579 4462,4887,4972,5312,5362,5442,5466,5482,5593,5986,5992,6162,6337,
%U A271579 6438,6532,6662,6747,6792,6887,6974,6987,7112,7177,7437,7507,7662,7975,8032,8222
%N A271579 Magic sums of 4 X 4 magic squares composed of triangular numbers.
%H A271579 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a>
%e A271579 Examples of 4 X 4 magic squares composed of triangular numbers.
%e A271579 .
%e A271579 |----|----|----|----|
%e A271579 | 66 |  1 | 300|1035|
%e A271579 |----|----|----|----|
%e A271579 | 465| 630| 171| 136|
%e A271579 |----|----|----|----|
%e A271579 | 780| 105| 496| 21 |
%e A271579 |----|----|----|----|
%e A271579 | 91 | 666| 435| 210|
%e A271579 |----|----|----|----|
%e A271579 The magic constant is 1402 = a(1).
%e A271579 .
%e A271579 |----|----|----|----|
%e A271579 |  1 | 45 | 435|1431|
%e A271579 |----|----|----|----|
%e A271579 | 300|1326| 276| 10 |
%e A271579 |----|----|----|----|
%e A271579 |1596| 190| 120|  6 |
%e A271579 |----|----|----|----|
%e A271579 | 15 | 351|1081| 465|
%e A271579 |----|----|----|----|
%e A271579 The magic constant is 1912 = a(2).
%Y A271579 Cf. A000217, A271580, A271711. Subsequence of A271581.
%K A271579 nonn
%O A271579 1,1
%A A271579 _Arkadiusz Wesolowski_, Apr 10 2016