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Search: id:A130322
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| 1, 4, 1, 12, 4, 1, 32, 12, 4, 1, 80, 32, 12, 4, 1, 192, 80, 32, 12, 4, 1, 448, 192, 80, 32, 12, 4, 1, 1024, 448, 192, 80, 32, 12, 4, 1, 2304, 1024, 448, 192, 80, 32, 12, 4, 1
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums = A000337: (1, 5, 17, 49, 129, 321,...).
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FORMULA
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The square of triangle A130321 as an infinite lower triangular matrix. A001787 in every column starting (1, 4, 12, 32, 80, 192,...).
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EXAMPLE
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First few rows of the triangle are:
1;
4, 1;
12, 4, 1;
32, 12, 4, 1;
80, 32, 12, 4, 1;
192, 80, 32, 12, 4, 1;
...
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CROSSREFS
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Cf. A130321, A001787, A000337.
Adjacent sequences: A130319 A130320 A130321 this_sequence A130323 A130324 A130325
Sequence in context: A064279 A078710 A080303 this_sequence A106194 A051290 A125105
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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), May 24 2007
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