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Search: id:A135042
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| A135042 |
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Binomial transform of [1, 1, 2, 0, -2, 4, -6, 8, -10, 12,...]. |
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+0
1
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| 1, 2, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 75, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Sum of antidiagonal terms of the following arithmetic array:
1, 1, 1, 1, 1,...
1, 3, 5, 7, 9,...
1, 4, 7, 10, 13,...
...
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FORMULA
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A007318 * [1, 1, 2, 0, -2, 4, -6, 8, -10, 12,...].
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EXAMPLE
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a(4) = 10 = (1, 3, 3, 1) dot (1, 1, 2, 0) = (1 + 3 + 6 + 0).
a(4) = 10 = (4 + 5 + 1).
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CROSSREFS
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Adjacent sequences: A135039 A135040 A135041 this_sequence A135043 A135044 A135045
Sequence in context: A064955 A101725 A105370 this_sequence A109666 A024390 A125622
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), May 10 2008
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