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Search: id:A144154
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| 1, 2, 1, 3, 2, 2, 5, 3, 4, 5, 8, 5, 6, 6, 5, 13, 8, 10, 9, 10, 8, 21, 13, 16, 15, 15, 16, 13, 34, 21, 26, 24, 25, 24, 26, 21, 55, 34, 42, 39, 40, 40, 39, 42, 34
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A023610: (1, 3, 7, 15, 30, 58,...).
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FORMULA
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The triangle as an infinite lower triangular matrix = A * B. A = a Fibonacci subsequences decrescendo triangle: (1; 2,1; 3,2,1; 5,3,2,1;...) and B = A127647, an infinite lower triangular matrix with the Fibonacci sequence as the main diagonal and the rest zeros.
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EXAMPLE
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First few rows of the triangle =
1;
2, 1;
3, 2, 2;
5, 3, 4, 3;
8, 5, 6, 6, 5;
13, 8, 10, 9, 10, 8;
21, 13, 16, 15, 15, 16, 13;
34, 21, 26, 24, 25, 24, 26, 21;
... Row 4 = (5, 3, 4, 3) = termwise products of (5, 3, 2, 1) and (1, 1, 2, 3).
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CROSSREFS
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A023610
Sequence in context: A137948 A120933 A064134 this_sequence A054710 A048233 A005679
Adjacent sequences: A144151 A144152 A144153 this_sequence A144155 A144156 A144157
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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), Sep 12 2008
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