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A123326
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Let M be the matrix defined in A111490. Sequence gives the sum of the elements of the sub-matrices (from the upper left element): M(1,1); M(1,1)+M(1,2)+M(1,2)+M(2,2); M(1,1)+M(1,2)+M(1,3)+M(2,1)+M(2,2)+M(2,3)+M(3,1)+M(3,2)+M(3,3), etc.
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1
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1, 5, 13, 27, 47, 77, 114, 165, 226, 302, 391, 502, 622, 768, 933, 1120, 1325, 1564, 1819, 2112, 2424
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