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A269062 Magic sums of 3 X 3 semimagic squares composed of positive triangular numbers and squares.

%I A269062 #14 Jan 15 2025 16:41:49
%S A269062 136,146,161,175,200,230,236,250,263,277,280,290,301,316,317,326,340,
%T A269062 346,355,370,382,394,395,398,406,410,416,421,425,431,434,436,445,446,
%U A269062 450,461,470,472,481,484,487,494,497,499,502,511,515,518,520,527,530
%N A269062 Magic sums of 3 X 3 semimagic squares composed of positive triangular numbers and squares.
%H A269062 Andrew Howroyd, <a href="/A269062/b269062.txt">Table of n, a(n) for n = 1..3093</a>
%e A269062 A semimagic square with sum 136:
%e A269062   |----|----|----|
%e A269062   |  6 | 25 |105 |
%e A269062   |----|----|----|
%e A269062   | 49 | 66 | 21 |
%e A269062   |----|----|----|
%e A269062   | 81 | 45 | 10 |
%e A269062   |----|----|----|
%Y A269062 Cf. A269060, A269061.
%K A269062 nonn
%O A269062 1,1
%A A269062 _Arkadiusz Wesolowski_, Feb 18 2016