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Search: id:A085881
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| 1, 1, 1, 3, 6, 3, 15, 45, 45, 15, 105, 420, 630, 420, 105, 945, 4725, 9450, 9450, 4725, 945, 10395, 62370, 155925, 207900, 155925, 62370, 10395, 135135, 945945, 2837835, 4729725, 4729725, 2837835, 945945, 135135, 2027025
(list; table; graph; listen)
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OFFSET
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0,4
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FORMULA
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Triangle given by [1, 2, 3, 4, 5, 6, ...] DELTA [1, 2, 3, 4, 5, 6, ...] where DELTA is Deleham's operator defined in A084938.
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EXAMPLE
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1; 1,1; 3,6,3; 15,45,45,15; ...
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CROSSREFS
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Sequence in context: A085709 A120910 A109044 this_sequence A127574 A021737 A011307
Adjacent sequences: A085878 A085879 A085880 this_sequence A085882 A085883 A085884
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KEYWORD
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nonn,tabl
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Aug 17 2003
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