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Search: id:A114284
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| A114284 |
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Riordan array ((1-3x)/(1-x),x). |
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+0
3
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| 1, -2, 1, -2, -2, 1, -2, -2, -2, 1, -2, -2, -2, -2, 1, -2, -2, -2, -2, -2, 1, -2, -2, -2, -2, -2, -2, 1, -2, -2, -2, -2, -2, -2, -2, 1, -2, -2, -2, -2, -2, -2, -2, -2, 1, -2, -2, -2, -2, -2, -2, -2, -2, -2, 1, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, 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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Inverse of A114283. Row sums are 1-2n. Diagonal sums are A114285. Sequence array of 3*0^n-2.
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FORMULA
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T(n, k)=if(k<=n, 3*0^(n-k)-2, 0)
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EXAMPLE
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Triangle begins
1;
-2,1;
-2,-2,1;
-2,-2,-2,1;
-2,-2,-2,-2,1;
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CROSSREFS
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Sequence in context: A022303 A113189 A143098 this_sequence A023575 A105446 A058978
Adjacent sequences: A114281 A114282 A114283 this_sequence A114285 A114286 A114287
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KEYWORD
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easy,sign,tabl
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Nov 20 2005
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