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A135184
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Triangle read by rows: A000012 * A128229^2 as infinite lower triangular matrices.
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1
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1, 3, 1, 5, 5, 1, 5, 11, 7, 1, 5, 11, 19, 9, 1, 5, 11, 19, 29, 11, 1, 5, 11, 19, 29, 41, 13, 1, 5, 11, 19, 29, 41, 55, 15, 1, 5, 11, 19, 29, 41, 55, 71, 17, 1, 5, 11, 19, 29, 41, 55, 71, 89, 19, 1, 5, 11, 19, 29, 41, 55, 71, 89, 109, 21, 1, 5, 11, 19, 29, 41, 55, 71, 89, 109, 131, 23, 1
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OFFSET
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1,2
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COMMENTS
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Row sums = A006527: (1, 4, 11, 24, 45, 76, ...).
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LINKS
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EXAMPLE
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First few rows of the triangle:
1;
3, 1;
5, 5, 1;
5, 11, 7, 1;
5, 11, 19, 9, 1;
5, 11, 19, 29, 11, 1;
5, 11, 19, 29, 41, 13, 1;
5, 11, 19, 29, 41, 55, 15, 1;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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a(19), a(20) corrected and more terms from Georg Fischer, Jun 05 2023
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STATUS
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approved
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