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A342384
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Irregular triangle T read by rows: T(n, k) is the number of n-th order magic triangles with magic constant equal to A285009(n) + k, with 0 < k <= 3*n - 5.
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2
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0, 1, 1, 1, 1, 2, 0, 4, 6, 4, 0, 2, 18, 38, 71, 108, 115, 115, 108, 71, 38, 18, 155, 351, 695, 1067, 1475, 1815, 2007, 1815, 1475, 1067, 695, 351, 155, 1891, 4768, 9872, 15370, 22527, 30096, 35731, 37957, 37957, 35731, 30096, 22527, 15370, 9872, 4768, 1891
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,6
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LINKS
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EXAMPLE
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The triangle begins:
0;
1, 1, 1, 1;
2, 0, 4, 6, 4, 0, 2;
18, 38, 71, 108, 115, 115, 108, 71, 38, 18;
155, 351, 695, 1067, 1475, 1815, 2007, 1815, 1475, 1067, 695, 351, 155;
...
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PROG
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(PARI) \\ See A342467 for program code.
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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