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Search: id:A137593
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| 1, 1, 2, 1, 4, 4, 1, 4, 16, 12, 1, 4, 16, 84, 48, 1, 4, 16, 156, 504, 192, 1, 4, 16, 156, 1464, 3312, 960, 1, 4, 16, 156, 1464, 14112, 2472, 5760, 1, 4, 16, 156, 1464, 24912, 158640, 189360, 34560, 1, 4, 16, 156, 1464, 24912, 400560, 1761840, 1607040, 241920
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OFFSET
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1,3
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COMMENT
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Right border = A004527: (1, 2, 4, 12, 48, 192,...). Row sums = A007489 starting (1, 3, 9, 33, 153,...).
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FORMULA
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A000012 * A136717 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 2;
1, 4, 4;
1, 4, 16, 12;
1, 4, 16, 84, 48;
1, 4, 16, 156, 504, 192;
1, 4, 16, 156, 1464, 3312, 960;
...
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CROSSREFS
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Cf. A136717, A004527, A007489.
Sequence in context: A105568 A004175 A136756 this_sequence A009949 A070785 A105537
Adjacent sequences: A137590 A137591 A137592 this_sequence A137594 A137595 A137596
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 28 2008
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