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Search: id:A144824
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| 1, -1, 2, -1, -2, 6, 0, -4, 0, 8, -1, -2, -3, -4, 20, 1, -2, -6, -4, 5, 12, -1, -2, -3, -4, -5, -6, 42, 0, 0, 0, -16, 0, 0, 0, 32, 0, 0, -9, 0, 0, -18, 0, 0, 54, 1, -2, 3, -4, -20, -6, 7, -8, 9, 40, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, 110
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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Row sums = A023896: (1, 1, 3, 4, 10, 16, 21,...).
Right border = A002618: (1, 2, 6, 8, 20, 12,...).
Left border = mu(n), A008683
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FORMULA
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Triangle read by rows, A054533 * A127648. The operation is equivalent to taking termwise products of row A054533 terms and the natural numbers.
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EXAMPLE
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Triangle A054533 starts:
1;
-1, 1;
-1, -1, 2;Q 0, -2, 0, 2;Q ...
The first few rows of triangle A144824 =
1;
-1, 2;
-1, -2, 6;
0, -4, 0, 8;
-1, -2, -3, -4, 20;
1, -2, -6, -4, 5, 12;
-1, -2, -3, -4, -5, -6, 42;
...
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CROSSREFS
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A054533, Cf. A023896, A002618, A008683.
Sequence in context: A032238 A000619 A006602 this_sequence A144358 A049404 A159885
Adjacent sequences: A144821 A144822 A144823 this_sequence A144825 A144826 A144827
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 21 2008
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