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Search: id:A155161
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| A155161 |
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Triangle T(n,k), 0<=k<=n, read by rows given by [0,1,1,-1,0,0,0,0,0,0,0,...] DELTA [1,0,0,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938 . |
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+0
4
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| 1, 0, 1, 0, 1, 1, 0, 2, 2, 1, 0, 3, 5, 3, 1, 0, 5, 10, 9, 4, 1, 0, 8, 20, 22, 14, 5, 1, 0, 13, 38, 51, 40, 20, 6, 1, 0, 21, 71, 111, 105, 65, 27, 7, 1, 0, 34, 130, 233, 256, 190, 98, 35, 8, 1, 0, 55, 235, 474, 594, 511, 315, 140, 44, 9, 1, 0, 89, 420, 942, 1324, 1295, 924, 490, 192
(list; table; graph; listen)
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OFFSET
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0,8
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COMMENT
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A Fibonacci convolution triangle ; Riordan array (1,x/(1-x-x^2)) .
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EXAMPLE
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Triangle begins : 1 ; 0,1 ; 0,1,1 ; 0,2,2,1 ; 0,3,5,3,1 ; 0,5,10,9,4,1 ; ...
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CROSSREFS
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Cf. A000045, A037027
Sequence in context: A146527 A063250 A107424 this_sequence A065177 A064044 A144912
Adjacent sequences: A155158 A155159 A155160 this_sequence A155162 A155163 A155164
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KEYWORD
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nonn,tabl
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 21 2009
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